CueFrame

Apply Composition

apply_composition

Atomically apply an array of CompositionOps to a project composition. All ops succeed or none do (transactional). Call describe_composition_ops without type for the compact operation list, then with a type for its exact JSON Schema. For negotiated component execution, read get_composition with componentExecutionVersions=["3","4"] and includeDependencies="true", then send componentExecutionVersions:[3,4] and that exact expectedBrandIdentity. A changed brand refuses the command; never refresh the witness to conceal a conflict. Explicit builtinSources selectors attach only the approved exact source pins referenced by the final composition. The additive concurrency envelope requires an endpoint confirmed to enforce guardedCompositionV1; unsupported hosted endpoints refuse it with unsupported_concurrency. Obtain dependency expectations from the observed composition; never rebuild a stale basis from current state. Pass if_match for optimistic-concurrency control (409 stale_etag on mismatch) and dry_run: true to validate the batch without persisting. Ops land on the project's ACTIVE composition unless you pass composition_id (mutually exclusive with session_id), which targets a specific one — that is how you author a second composition minted with new_composition and run an A/B. Use this to seed a composition (add media clips) or make targeted edits (set a crop intent, reorder clips, set the format). CAPTIONS FOR EDITED TIMELINES: after saving all clip edits, call again with {type:"captions.fromComposition", trackId} to build captions from every audible clip on that track, honoring trims, exclusions and placement. Clips must have duration matching playable source duration divided by playbackRate; unsupported timing fails explicitly. Re-run it after later timeline edits; captions do not update automatically. {type:"captions.fromTranscript", mediaId, window?} instead replaces all captions from one media transcript, rebased to zero; it does not follow a montage. Style with {type:"setCaptionStyle", style}; or set explicit words with {type:"setCaptions", segments, style?} (e.g. translations or your own VO timings). Brand is NOT set here — it lives on the project (create_project / update_project with brandKitId — or PATCH /projects/:id over REST). CARDS: a {kind:"card", html, tokens} clip projects each tokens KEY x to the CSS custom property --cf-x, so the html must read it as var(--cf-x) — write tokens:{"plate":"#0af"} + background:var(--cf-plate). Do NOT put dashes in the key: "--plate" becomes --cf---plate and your var(--plate) then resolves to NOTHING, which CSS silently degrades to a transparent background and black text. Responses carry warnings[] when a card reads a var nothing defines. SCENE SHOTS: for a 3D product shot — a tilted page screenshot, a lit laptop/phone showing a real screenshot, two-colour type, a colour-field backdrop, focus/grain/vignette and a camera move — use {type:"scene.add", clipId, newTrack|trackId, startTime, duration, scene, assets} and revise it with {type:"scene.update", clipId, scene?, assets?, startTime?, duration?}. You author a scene SPEC, never wrapper TSX; the server registers the component for you. There is NO built-in scene primitive in list_catalog — READ cueframe://scene-shot first for the JSON schema, the canonical V2 world-objects recipe with nested groups, slabs, pages, phones, laptops, world/screen text, admitted surfaces, camera motion, lighting, and the current resource limits.

Input Schema

TableJSON Schema

Name	Required	Description	Default
`body`	Yes	POST /projects/:id/composition/apply body — a batch of CompositionOps.
`projectId`	Yes	projectId (path).

Schema Changelog

Changes observed during successful MCP inspections.

Changed15 schema fields changedOct 15, 2026

changedInput schema / $defs / __schema0 / anyOf

Previous value: -[
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Previous value: -[
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+                  "type": "string"
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+                    "$brand:colors.background",
+                    "$brand:colors.surface",
+                    "$brand:colors.text",
+                    "$brand:colors.textMuted",
+                    "$brand:colors.accent",
+                    "$brand:colors.accentStrong",
+                    "$brand:colors.accentSoft",
+                    "$brand:colors.success",
+                    "$brand:colors.warning",
+                    "$brand:colors.danger"
+                  ],
+                  "type": "string"
+                }
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+                  "maxLength": 64,
+                  "minLength": 1,
+                  "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
+                  "type": "string"
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+                      "type": "string"
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+                        "$brand:colors.surface",
+                        "$brand:colors.text",
+                        "$brand:colors.textMuted",
+                        "$brand:colors.accent",
+                        "$brand:colors.accentStrong",
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+                        "$brand:colors.success",
+                        "$brand:colors.warning",
+                        "$brand:colors.danger"
+                      ],
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+                  ]
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+            "items": false,
+            "maxItems": 3,
+            "minItems": 3,
+            "prefixItems": [
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+        "type": "number"
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+        "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
+        "type": "string"
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+        "type": "string"
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+      "materials": {
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+          "properties": {
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+            },
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+                    "$brand:colors.surface",
+                    "$brand:colors.text",
+                    "$brand:colors.textMuted",
+                    "$brand:colors.accent",
+                    "$brand:colors.accentStrong",
+                    "$brand:colors.accentSoft",
+                    "$brand:colors.success",
+                    "$brand:colors.warning",
+                    "$brand:colors.danger"
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+              "minimum": 0,
+              "type": "number"
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+              "minLength": 1,
+              "type": "string"
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+            "roughness": {
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+              "minimum": 0,
+              "type": "number"
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+            "type": {
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+                "unlit"
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+      "surfaces": {
+        "additionalProperties": {
+          "oneOf": [
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+              "additionalProperties": false,
+              "properties": {
+                "assetSlot": {
+                  "description": "Image asset slot name bound by the clip assets map; never a URL.",
+                  "maxLength": 64,
+                  "minLength": 1,
+                  "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
+                  "type": "string"
+                },
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+              "required": [
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+                "assetSlot"
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+              "type": "object"
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+            {
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+              "properties": {
+                "color": {
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+                      "type": "string"
+                    },
+                    {
+                      "enum": [
+                        "$brand:colors.background",
+                        "$brand:colors.surface",
+                        "$brand:colors.text",
+                        "$brand:colors.textMuted",
+                        "$brand:colors.accent",
+                        "$brand:colors.accentStrong",
+                        "$brand:colors.accentSoft",
+                        "$brand:colors.success",
+                        "$brand:colors.warning",
+                        "$brand:colors.danger"
+                      ],
+                      "type": "string"
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+                "source": {
+                  "const": "color",
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+              "type": "object"
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+              "properties": {
+                "bakeScale": {
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+                      "type": "number"
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+                    {
+                      "const": 3,
+                      "type": "number"
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+                  "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
+                },
+                "captureFrame": {
+                  "maximum": 9007199254740991,
+                  "minimum": 0,
+                  "type": "integer"
+                },
+                "component": {
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+                  "properties": {
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+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "sourceVersionId": {
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+                      "type": "string"
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+                    "version": {
+                      "const": 1,
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "version",
+                    "componentId",
+                    "sourceVersionId"
+                  ],
+                  "type": "object"
+                },
+                "layout": {
+                  "additionalProperties": false,
+                  "properties": {
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+                      "maximum": 9007199254740991,
+                      "type": "integer"
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+                    "width": {
+                      "exclusiveMinimum": 0,
+                      "maximum": 9007199254740991,
+                      "type": "integer"
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+                  "required": [
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+                    "height"
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+                  "type": "object"
+                },
+                "params": {
+                  "additionalProperties": {
+                    "$ref": "#/$defs/__schema2"
+                  },
+                  "properties": {},
+                  "propertyNames": {
+                    "type": "string"
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+                  "type": "object"
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+                "source": {
+                  "const": "component",
+                  "type": "string"
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+              },
+              "required": [
+                "source",
+                "component",
+                "captureFrame",
+                "layout"
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+              "type": "object"
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+            {
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+              "properties": {
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+                  "maximum": 9007199254740991,
+                  "type": "integer"
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+                "mediaId": {
+                  "maxLength": 256,
+                  "minLength": 1,
+                  "type": "string"
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+                "source": {
+                  "const": "video",
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+                  "type": "integer"
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+        "default": 0,
+        "maximum": 40,
+        "minimum": -20,
+        "type": "number"
+      },
+      "lineHeight": {
+        "default": 1.2,
+        "maximum": 3,
+        "minimum": 0.6,
+        "type": "number"
+      },
+      "lines": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "runs": {
+              "items": {
+                "additionalProperties": false,
+                "properties": {
+                  "color": {
+                    "anyOf": [
+                      {
+                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
+                        "type": "string"
+                      },
+                      {
+                        "enum": [
+                          "$brand:colors.background",
+                          "$brand:colors.surface",
+                          "$brand:colors.text",
+                          "$brand:colors.textMuted",
+                          "$brand:colors.accent",
+                          "$brand:colors.accentStrong",
+                          "$brand:colors.accentSoft",
+                          "$brand:colors.success",
+                          "$brand:colors.warning",
+                          "$brand:colors.danger"
+                        ],
+                        "type": "string"
+                      }
+                    ]
+                  },
+                  "emphasis": {
+                    "type": "boolean"
+                  },
+                  "text": {
+                    "maxLength": 512,
+                    "minLength": 1,
+                    "pattern": "^[^\\r\\n]+$",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "text"
+                ],
+                "type": "object"
+              },
+              "maxItems": 16,
+              "minItems": 1,
+              "type": "array"
+            }
+          },
+          "required": [
+            "runs"
+          ],
+          "type": "object"
+        },
+        "maxItems": 24,
+        "minItems": 1,
+        "type": "array"
+      },
+      "maxWidth": {
+        "exclusiveMinimum": 0,
+        "type": "number"
+      },
+      "opacity": {
+        "default": 1,
+        "maximum": 1,
+        "minimum": 0,
+        "type": "number"
+      },
+      "space": {
+        "const": "world",
+        "type": "string"
+      },
+      "transform": {
+        "additionalProperties": false,
+        "default": {
+          "position": [
+            0,
+            0,
+            0
+          ],
+          "rotation": [
+            0,
+            0,
+            0
+          ],
+          "scale": 1
+        },
+        "properties": {
+          "position": {
+            "default": [
+              0,
+              0,
+              0
+            ],
+            "items": false,
+            "maxItems": 3,
+            "minItems": 3,
+            "prefixItems": [
+              {
+                "type": "number"
+              },
+              {
+                "type": "number"
+              },
+              {
+                "type": "number"
+              }
+            ],
+            "type": "array"
+          },
+          "rotation": {
+            "default": [
+              0,
+              0,
+              0
+            ],
+            "items": false,
+            "maxItems": 3,
+            "minItems": 3,
+            "prefixItems": [
+              {
+                "type": "number"
+              },
+              {
+                "type": "number"
+              },
+              {
+                "type": "number"
+              }
+            ],
+            "type": "array"
+          },
+          "scale": {
+            "default": 1,
+            "exclusiveMinimum": 0,
+            "type": "number"
+          }
+        },
+        "type": "object"
+      }
+    },
+    "required": [
+      "id",
+      "kind",
+      "lines",
+      "fontFamily",
+      "fontWeight",
+      "fontStyle",
+      "fontSize",
+      "color",
+      "space"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "align": {
+        "default": "center",
+        "enum": [
+          "left",
+          "center",
+          "right"
+        ],
+        "type": "string"
+      },
+      "color": {
+        "anyOf": [
+          {
+            "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
+            "type": "string"
+          },
+          {
+            "enum": [
+              "$brand:colors.background",
+              "$brand:colors.surface",
+              "$brand:colors.text",
+              "$brand:colors.textMuted",
+              "$brand:colors.accent",
+              "$brand:colors.accentStrong",
+              "$brand:colors.accentSoft",
+              "$brand:colors.success",
+              "$brand:colors.warning",
+              "$brand:colors.danger"
+            ],
+            "type": "string"
+          }
+        ]
+      },
+      "fontFamily": {
+        "anyOf": [
+          {
+            "maxLength": 128,
+            "minLength": 1,
+            "pattern": "^[A-Za-z0-9][A-Za-z0-9 _.\\-]*$",
+            "type": "string"
+          },
+          {
+            "enum": [
+              "$brand:fonts.heading",
+              "$brand:fonts.body",
+              "$brand:fonts.caption"
+            ],
+            "type": "string"
+          }
+        ]
+      },
+      "fontSize": {
+        "maximum": 800,
+        "minimum": 8,
+        "type": "number"
+      },
+      "fontStyle": {
+        "enum": [
+          "normal",
+          "italic"
+        ],
+        "type": "string"
+      },
+      "fontWeight": {
+        "maximum": 900,
+        "minimum": 100,
+        "type": "integer"
+      },
+      "id": {
+        "maxLength": 64,
+        "minLength": 1,
+        "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
+        "type": "string"
+      },
+      "kind": {
+        "const": "text",
+        "type": "string"
+      },
+      "letterSpacing": {
+        "default": 0,
+        "maximum": 40,
+        "minimum": -20,
+        "type": "number"
+      },
+      "lineHeight": {
+        "default": 1.2,
+        "maximum": 3,
+        "minimum": 0.6,
+        "type": "number"
+      },
+      "lines": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "runs": {
+              "items": {
+                "additionalProperties": false,
+                "properties": {
+                  "color": {
+                    "anyOf": [
+                      {
+                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
+                        "type": "string"
+                      },
+                      {
+                        "enum": [
+                          "$brand:colors.background",
+                          "$brand:colors.surface",
+                          "$brand:colors.text",
+                          "$brand:colors.textMuted",
+                          "$brand:colors.accent",
+                          "$brand:colors.accentStrong",
+                          "$brand:colors.accentSoft",
+                          "$brand:colors.success",
+                          "$brand:colors.warning",
+                          "$brand:colors.danger"
+                        ],
+                        "type": "string"
+                      }
+                    ]
+                  },
+                  "emphasis": {
+                    "type": "boolean"
+                  },
+                  "text": {
+                    "maxLength": 512,
+                    "minLength": 1,
+                    "pattern": "^[^\\r\\n]+$",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "text"
+                ],
+                "type": "object"
+              },
+              "maxItems": 16,
+              "minItems": 1,
+              "type": "array"
+            }
+          },
+          "required": [
+            "runs"
+          ],
+          "type": "object"
+        },
+        "maxItems": 24,
+        "minItems": 1,
+        "type": "array"
+      },
+      "maxWidth": {
+        "exclusiveMinimum": 0,
+        "type": "number"
+      },
+      "opacity": {
+        "default": 1,
+        "maximum": 1,
+        "minimum": 0,
+        "type": "number"
+      },
+      "rotation": {
+        "default": 0,
+        "type": "number"
+      },
+      "scale": {
+        "default": 1,
+        "exclusiveMinimum": 0,
+        "type": "number"
+      },
+      "space": {
+        "const": "screen",
+        "type": "string"
+      },
+      "x": {
+        "type": "number"
+      },
+      "y": {
+        "type": "number"
+      }
+    },
+    "required": [
+      "id",
+      "kind",
+      "lines",
+      "fontFamily",
+      "fontWeight",
+      "fontStyle",
+      "fontSize",
+      "color",
+      "space",
+      "x",
+      "y"
+    ],
+    "type": "object"
+  }
+]

addedInput schema / $defs / __schema2

Added value: +{
+  "anyOf": [
+    {
+      "type": "null"
+    },
+    {
+      "type": "boolean"
+    },
+    {
+      "type": "number"
+    },
+    {
+      "type": "string"
+    },
+    {
+      "items": {
+        "$ref": "#/$defs/__schema2"
+      },
+      "type": "array"
+    },
+    {
+      "additionalProperties": {
+        "$ref": "#/$defs/__schema2"
+      },
+      "properties": {},
+      "propertyNames": {
+        "type": "string"
+      },
+      "type": "object"
+    }
+  ]
+}

addedInput schema / properties / body / properties / builtinSources / items / properties / sourceVersion / anyOf

Added value: +[
+  {
+    "const": 3,
+    "type": "number"
+  },
+  {
+    "const": 4,
+    "type": "number"
+  }
+]

removedInput schema / properties / body / properties / builtinSources / items / properties / sourceVersion / const
```
Removed value: -3
```
removedInput schema / properties / body / properties / builtinSources / items / properties / sourceVersion / type
```
Removed value: -"number"
```

addedInput schema / properties / body / properties / componentExecutionVersions / anyOf

Added value: +[
+  {
+    "items": false,
+    "maxItems": 1,
+    "minItems": 1,
+    "prefixItems": [
+      {
+        "const": 3,
+        "type": "number"
+      }
+    ],
+    "type": "array"
+  },
+  {
+    "items": false,
+    "maxItems": 2,
+    "minItems": 2,
+    "prefixItems": [
+      {
+        "const": 3,
+        "type": "number"
+      },
+      {
+        "const": 4,
+        "type": "number"
+      }
+    ],
+    "type": "array"
+  }
+]

removedInput schema / properties / body / properties / componentExecutionVersions / items
```
Removed value: -{
-  "const": 3,
-  "type": "number"
-}
```
removedInput schema / properties / body / properties / componentExecutionVersions / maxItems
```
Removed value: -1
```
removedInput schema / properties / body / properties / componentExecutionVersions / minItems
```
Removed value: -1
```
removedInput schema / properties / body / properties / componentExecutionVersions / type
```
Removed value: -"array"
```

removedInput schema / properties / body / properties / concurrency / anyOf

Removed value: -[
-  {
-    "additionalProperties": false,
-    "properties": {
-      "expectedRevision": {
-        "maximum": 9007199254740991,
-        "minimum": 0,
-        "type": "integer"
-      },
-      "mode": {
-        "const": "exact",
-        "type": "string"
-      }
-    },
-    "required": [
-      "mode",
-      "expectedRevision"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "properties": {
-      "basis": {
-        "items": {
-          "additionalProperties": false,
-          "properties": {
-            "key": {
-              "maxLength": 256,
-              "minLength": 1,
-              "type": "string"
-            },
-            "token": {
-              "maxLength": 65536,
-              "type": "string"
-            }
-          },
-          "required": [
-            "key",
-            "token"
-          ],
-          "type": "object"
-        },
-        "maxItems": 2048,
-        "type": "array"
-      },
-      "compositionId": {
-        "maxLength": 128,
-        "minLength": 1,
-        "type": "string"
-      },
-      "mode": {
-        "const": "guarded",
-        "type": "string"
-      },
-      "observedRevision": {
-        "maximum": 9007199254740991,
-        "minimum": 0,
-        "type": "integer"
-      }
-    },
-    "required": [
-      "mode",
-      "observedRevision",
-      "basis"
-    ],
-    "type": "object"
-  }
-]

addedInput schema / properties / body / properties / concurrency / oneOf

Added value: +[
+  {
+    "additionalProperties": false,
+    "properties": {
+      "expectedRevision": {
+        "maximum": 9007199254740991,
+        "minimum": 0,
+        "type": "integer"
+      },
+      "mode": {
+        "const": "exact",
+        "type": "string"
+      }
+    },
+    "required": [
+      "mode",
+      "expectedRevision"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "properties": {
+      "basis": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "key": {
+              "maxLength": 256,
+              "minLength": 1,
+              "type": "string"
+            },
+            "token": {
+              "maxLength": 65536,
+              "type": "string"
+            }
+          },
+          "required": [
+            "key",
+            "token"
+          ],
+          "type": "object"
+        },
+        "maxItems": 2048,
+        "type": "array"
+      },
+      "compositionId": {
+        "maxLength": 128,
+        "minLength": 1,
+        "type": "string"
+      },
+      "mode": {
+        "const": "guarded",
+        "type": "string"
+      },
+      "observedRevision": {
+        "maximum": 9007199254740991,
+        "minimum": 0,
+        "type": "integer"
+      }
+    },
+    "required": [
+      "mode",
+      "observedRevision",
+      "basis"
+    ],
+    "type": "object"
+  }
+]

removedInput schema / properties / body / properties / ops / items / anyOf

Removed value: -[
-  {
-    "additionalProperties": false,
-    "description": "Author a scene shot and place it on a dedicated overlay track. The host validates the scene, generates and registers an immutable wrapper component source, and emits the ordinary track/clip operations carrying `props.componentRef` — you edit a scene SPEC, never wrapper TSX or a source hash. Registration and the composition update are ONE undoable edit; a failure publishes nothing and leaves no clip pointing at an unresolved source. Pass EXACTLY ONE of `trackId` (an existing dedicated scene track) or `newTrack: true` (mint one). That track holds scene-shot clips and gaps only — no generic component/primitive/media clips in v1 — and existing generic overlay tracks are unaffected. Scene clips use front zPlane and full-frame placement: outer per-clip `region`, `position`, `scale`, `rotation`, `fit`, `effects`, `animate`, `params.transition`, `params.sequenceGroup` and internal fadeIn/fadeOut are REFUSED with a path, because the shot's own layer transforms are the single transform owner. TEXT: `space: \"screen\"` text is composed above the world result, stays fixed in the frame and stays sharp through focus; `space: \"world\"` text is rasterized into the 3D scene, moves with the camera and is occluded by geometry. Screenshots and world text are UNLIT and colour-managed so product UI colours are not tinted by the studio lighting, while device bodies are lit and cast shadows; an unlit surface still occludes. SCOPE GAP (pre-existing, neither closed nor changed by scene shots): global wrap effects — composition-level grades and camera effects — do not reach front-overlay clips, so they do not affect a scene shot. Author the look INSIDE the shot (`post.grain`, `post.vignette`, `post.focus`, `backdrop`, `environment`) instead. DISCOVERY: there is no built-in scene primitive to look up in list_catalog; the wrapper this operation registers appears afterwards as an ordinary INSTALLED component under the existing catalog rules. ASSETS: `assets` binds each slot name a layer references to a media id in the same project, and the slot's declared KIND decides what it admits — an image slot takes PNG, JPEG or WebP, a video slot MP4 or WebM. Binding the wrong kind is refused with the slot's path.",
-    "properties": {
-      "assets": {
-        "additionalProperties": {
-          "type": "string"
-        },
-        "propertyNames": {
-          "type": "string"
-        },
-        "type": "object"
-      },
-      "clipId": {
-        "type": "string"
-      },
-      "duration": {
-        "exclusiveMinimum": 0,
-        "type": "number"
-      },
-      "newTrack": {
-        "type": "boolean"
-      },
-      "newTrackId": {
-        "type": "string"
-      },
-      "scene": {
-        "additionalProperties": false,
-        "description": "A version-2 scene shot: a self-contained 3D world-object shot that scene.add / scene.update materializes into an ordinary component clip. The shot owns its layers, camera, lighting, backdrop and normalized local animation; the composition owns start, duration, ordering, cuts and transitions. Coordinates are REFERENCE PIXELS: origin at frame centre, +X right, +Y down, +Z toward the viewer. referenceSize must have the SAME aspect ratio as the composition format; mismatch fails instead of cropping. At equal aspect ratio the shot scales uniformly by outputWidth/referenceWidth. A segment's easing belongs to the keyframe it ARRIVES at; the first keyframe has no easing. Authoring limits: 32 layers, 4 devices, 16 distinct image slots, 256 keyframes per channel, 2048 keyframes per shot. Version 2 supports nested groups, procedural slab/page/phone/laptop objects, screen- and world-space text, admitted image/component/video surfaces, fixed photographic and generated studio environments, transparent/solid/linear/radial backdrops, constraints, focus, grain and vignette. Raw HTML, custom shader props, imported GLB models, arbitrary external HDR environments, skeletal animation and physics are refused with an exact field path.",
-        "properties": {
-          "animation": {
-            "default": [],
-            "items": {
-              "additionalProperties": false,
-              "properties": {
-                "keyframes": {
-                  "items": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "at": {
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "easing": {
-                        "anyOf": [
-                          {
-                            "additionalProperties": false,
-                            "properties": {
-                              "kind": {
-                                "const": "linear",
-                                "type": "string"
-                              }
-                            },
-                            "required": [
-                              "kind"
-                            ],
-                            "type": "object"
-                          },
-                          {
-                            "additionalProperties": false,
-                            "properties": {
-                              "kind": {
-                                "const": "hold",
-                                "type": "string"
-                              }
-                            },
-                            "required": [
-                              "kind"
-                            ],
-                            "type": "object"
-                          },
-                          {
-                            "additionalProperties": false,
-                            "properties": {
-                              "kind": {
-                                "const": "bezier",
-                                "type": "string"
-                              },
-                              "x1": {
-                                "maximum": 1,
-                                "minimum": 0,
-                                "type": "number"
-                              },
-                              "x2": {
-                                "maximum": 1,
-                                "minimum": 0,
-                                "type": "number"
-                              },
-                              "y1": {
-                                "maximum": 5,
-                                "minimum": -4,
-                                "type": "number"
-                              },
-                              "y2": {
-                                "maximum": 5,
-                                "minimum": -4,
-                                "type": "number"
-                              }
-                            },
-                            "required": [
-                              "kind",
-                              "x1",
-                              "y1",
-                              "x2",
-                              "y2"
-                            ],
-                            "type": "object"
-                          }
-                        ]
-                      },
-                      "value": {
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "at",
-                      "value"
-                    ],
-                    "type": "object"
-                  },
-                  "maxItems": 256,
-                  "minItems": 1,
-                  "type": "array"
-                },
-                "property": {
-                  "enum": [
-                    "positionX",
-                    "positionY",
-                    "positionZ",
-                    "rotationX",
-                    "rotationY",
-                    "rotationZ",
-                    "fov",
-                    "scale",
-                    "opacity",
-                    "openAngle",
-                    "x",
-                    "y",
-                    "rotation",
-                    "intensity",
-                    "distance",
-                    "range",
-                    "maxBlur"
-                  ],
-                  "type": "string"
-                },
-                "target": {
-                  "anyOf": [
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "kind": {
-                          "const": "camera",
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "kind"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "kind": {
-                          "const": "layer",
-                          "type": "string"
-                        },
-                        "layerId": {
-                          "maxLength": 64,
-                          "minLength": 1,
-                          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "kind",
-                        "layerId"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "kind": {
-                          "const": "environment",
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "kind"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "kind": {
-                          "const": "focus",
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "kind"
-                      ],
-                      "type": "object"
-                    }
-                  ]
-                }
-              },
-              "required": [
-                "target",
-                "property",
-                "keyframes"
-              ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "backdrop": {
-            "anyOf": [
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "kind": {
-                    "const": "transparent",
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "kind"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "color": {
-                    "anyOf": [
-                      {
-                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                        "type": "string"
-                      },
-                      {
-                        "enum": [
-                          "$brand:colors.background",
-                          "$brand:colors.surface",
-                          "$brand:colors.text",
-                          "$brand:colors.textMuted",
-                          "$brand:colors.accent",
-                          "$brand:colors.accentStrong",
-                          "$brand:colors.accentSoft",
-                          "$brand:colors.success",
-                          "$brand:colors.warning",
-                          "$brand:colors.danger"
-                        ],
-                        "type": "string"
-                      }
-                    ]
-                  },
-                  "kind": {
-                    "const": "solid",
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "color"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
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-                                                                          {
-                                                                            "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                            "type": "string"
-                                                                          },
-                                                                          {
-                                                                            "enum": [
-                                                                              "$brand:colors.background",
-                                                                              "$brand:colors.surface",
-                                                                              "$brand:colors.text",
-                                                                              "$brand:colors.textMuted",
-                                                                              "$brand:colors.accent",
-                                                                              "$brand:colors.accentStrong",
-                                                                              "$brand:colors.accentSoft",
-                                                                              "$brand:colors.success",
-                                                                              "$brand:colors.warning",
-                                                                              "$brand:colors.danger"
-                                                                            ],
-                                                                            "type": "string"
-                                                                          }
-                                                                        ]
-                                                                      },
-                                                                      "source": {
-                                                                        "const": "color",
-                                                                        "type": "string"
-                                                                      }
-                                                                    },
-                                                                    "required": [
-                                                                      "source",
-                                                                      "color"
-                                                                    ],
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-                                                                  {
-                                                                    "additionalProperties": false,
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-                                                                            "const": 2,
-                                                                            "type": "number"
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-                                                                          {
-                                                                            "const": 3,
-                                                                            "type": "number"
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-                                                                        "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
-                                                                      },
-                                                                      "captureFrame": {
-                                                                        "maximum": 9007199254740991,
-                                                                        "minimum": 0,
-                                                                        "type": "integer"
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-                                                                            "type": "string"
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-                                                                            "const": 1,
-                                                                            "type": "number"
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-                                                                          "componentId",
-                                                                          "sourceVersionId"
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-                                                                        "type": "object"
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-                                                                            "maximum": 9007199254740991,
-                                                                            "type": "integer"
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-                                                                            "maximum": 9007199254740991,
-                                                                            "type": "integer"
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-                                                                          "height"
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-                                                                          "$ref": "#/$defs/__schema0"
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-                                                                        "propertyNames": {
-                                                                          "type": "string"
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-                                                                        "type": "object"
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-                                                                      "source": {
-                                                                        "const": "component",
-                                                                        "type": "string"
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-                                                                      "source",
-                                                                      "component",
-                                                                      "captureFrame",
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-                                                                    "type": "object"
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-                                                                        "maximum": 9007199254740991,
-                                                                        "type": "integer"
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-                                                                        "minLength": 1,
-                                                                        "type": "string"
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-                                                                      "source": {
-                                                                        "const": "video",
-                                                                        "type": "string"
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-                                                                        "minimum": 0,
-                                                                        "type": "integer"
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-                                                                      "mediaId"
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-                                                                    "type": "object"
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-                                                                  0,
-                                                                  0
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-                                                                    0,
-                                                                    0
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-                                                                    0,
-                                                                    0
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-                                                            "id",
-                                                            "width"
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-                                                          "type": "object"
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-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
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-                                                              "type": "number"
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-                                                              "type": "number"
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-                                                            "finish": {
-                                                              "default": "satin",
-                                                              "enum": [
-                                                                "satin",
-                                                                "brushed"
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-                                                              "type": "string"
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-                                                              "minimum": 40,
-                                                              "type": "number"
-                                                            },
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-                                                              "minLength": 1,
-                                                              "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                                              "type": "string"
-                                                            },
-                                                            "kind": {
-                                                              "const": "slab",
-                                                              "type": "string"
-                                                            },
-                                                            "materials": {
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-                                                                "properties": {
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-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "anisotropyRotation": {
-                                                                    "type": "number"
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-                                                                  "clearcoat": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
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-                                                                  "clearcoatRoughness": {
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-                                                                    "minimum": 0,
-                                                                    "type": "number"
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-                                                                  "color": {
-                                                                    "anyOf": [
-                                                                      {
-                                                                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                        "type": "string"
-                                                                      },
-                                                                      {
-                                                                        "enum": [
-                                                                          "$brand:colors.background",
-                                                                          "$brand:colors.surface",
-                                                                          "$brand:colors.text",
-                                                                          "$brand:colors.textMuted",
-                                                                          "$brand:colors.accent",
-                                                                          "$brand:colors.accentStrong",
-                                                                          "$brand:colors.accentSoft",
-                                                                          "$brand:colors.success",
-                                                                          "$brand:colors.warning",
-                                                                          "$brand:colors.danger"
-                                                                        ],
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-                                                                    "type": "number"
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-                                                                    "type": "number"
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-                                                                    "type": "number"
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-                                                                  "role": {
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-                                                                    "minLength": 1,
-                                                                    "type": "string"
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-                                                                    "type": "number"
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-                                                                  "type": {
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-                                                                      "physical",
-                                                                      "unlit"
-                                                                    ],
-                                                                    "type": "string"
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-                                                              "maxItems": 16,
-                                                              "type": "array"
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-                                                            "opacity": {
-                                                              "default": 1,
-                                                              "maximum": 1,
-                                                              "minimum": 0,
-                                                              "type": "number"
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-                                                            "surfaces": {
-                                                              "additionalProperties": {
-                                                                "anyOf": [
-                                                                  {
-                                                                    "additionalProperties": false,
-                                                                    "properties": {
-                                                                      "assetSlot": {
-                                                                        "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                                        "maxLength": 64,
-                                                                        "minLength": 1,
-                                                                        "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                                        "type": "string"
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-                                                                      "source": {
-                                                                        "const": "image",
-                                                                        "type": "string"
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-                                                                    "required": [
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-                                                                      "assetSlot"
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-                                                                    "type": "object"
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-                                                                    "properties": {
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-                                                                          {
-                                                                            "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                            "type": "string"
-                                                                          },
-                                                                          {
-                                                                            "enum": [
-                                                                              "$brand:colors.background",
-                                                                              "$brand:colors.surface",
-                                                                              "$brand:colors.text",
-                                                                              "$brand:colors.textMuted",
-                                                                              "$brand:colors.accent",
-                                                                              "$brand:colors.accentStrong",
-                                                                              "$brand:colors.accentSoft",
-                                                                              "$brand:colors.success",
-                                                                              "$brand:colors.warning",
-                                                                              "$brand:colors.danger"
-                                                                            ],
-                                                                            "type": "string"
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-                                                                      "source": {
-                                                                        "const": "color",
-                                                                        "type": "string"
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-                                                                    "required": [
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-                                                                      "color"
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-                                                                    "type": "object"
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-                                                                  {
-                                                                    "additionalProperties": false,
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-                                                                            "const": 2,
-                                                                            "type": "number"
-                                                                          },
-                                                                          {
-                                                                            "const": 3,
-                                                                            "type": "number"
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-                                                                        "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
-                                                                      },
-                                                                      "captureFrame": {
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-                                                                        "minimum": 0,
-                                                                        "type": "integer"
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-                                                                            "type": "string"
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-                                                                            "const": 1,
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-                                                                          "componentId",
-                                                                          "sourceVersionId"
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-                                                                            "type": "integer"
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-                                                                          "type": "string"
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-                                                                        "type": "object"
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-                                                                      "source": {
-                                                                        "const": "component",
-                                                                        "type": "string"
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-                                                                    "required": [
-                                                                      "source",
-                                                                      "component",
-                                                                      "captureFrame",
-                                                                      "layout"
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-                                                                    "type": "object"
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-                                                                        "type": "string"
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-                                                                      "source": {
-                                                                        "const": "video",
-                                                                        "type": "string"
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-                                                                      "mediaId"
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-                                                              "type": "object"
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-                                                                    0,
-                                                                    0
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-                                                                    0,
-                                                                    0
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-                                                              "type": "number"
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-                                                            "width",
-                                                            "height"
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-                                                              "type": "string"
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-                                                              "type": "boolean"
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-                                                              "type": "string"
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-                                                              "minimum": 40,
-                                                              "type": "number"
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-                                                              "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                                              "type": "string"
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-                                                              "const": "page",
-                                                              "type": "string"
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-                                                                    "type": "number"
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-                                                                      {
-                                                                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                        "type": "string"
-                                                                      },
-                                                                      {
-                                                                        "enum": [
-                                                                          "$brand:colors.background",
-                                                                          "$brand:colors.surface",
-                                                                          "$brand:colors.text",
-                                                                          "$brand:colors.textMuted",
-                                                                          "$brand:colors.accent",
-                                                                          "$brand:colors.accentStrong",
-                                                                          "$brand:colors.accentSoft",
-                                                                          "$brand:colors.success",
-                                                                          "$brand:colors.warning",
-                                                                          "$brand:colors.danger"
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-                                                                    "type": "number"
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-                                                                    "type": "string"
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-                                                                    "type": "number"
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-                                                              "type": "array"
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-                                                              "type": "number"
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-                                                                                "$brand:colors.accentSoft",
-                                                                                "$brand:colors.success",
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-                                                            "type": "number"
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-                                                          {
-                                                            "type": "number"
-                                                          }
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-                                                        "type": "array"
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-                                                      "rotation": {
-                                                        "default": [
-                                                          0,
-                                                          0,
-                                                          0
-                                                        ],
-                                                        "items": false,
-                                                        "maxItems": 3,
-                                                        "minItems": 3,
-                                                        "prefixItems": [
-                                                          {
-                                                            "type": "number"
-                                                          },
-                                                          {
-                                                            "type": "number"
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-                                                          {
-                                                            "type": "number"
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-                                                        "type": "array"
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-                                                      "scale": {
-                                                        "default": 1,
-                                                        "exclusiveMinimum": 0,
-                                                        "type": "number"
-                                                      }
-                                                    },
-                                                    "type": "object"
-                                                  }
-                                                },
-                                                "required": [
-                                                  "kind",
-                                                  "id",
-                                                  "children"
-                                                ],
-                                                "type": "object"
-                                              },
-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
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-                                                    "maxLength": 64,
-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                                    "type": "string"
-                                                  },
-                                                  "kind": {
-                                                    "const": "laptop",
-                                                    "type": "string"
-                                                  },
-                                                  "materials": {
-                                                    "items": {
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-                                                      "properties": {
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-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "anisotropyRotation": {
-                                                          "type": "number"
-                                                        },
-                                                        "clearcoat": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "clearcoatRoughness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "color": {
-                                                          "anyOf": [
-                                                            {
-                                                              "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                              "type": "string"
-                                                            },
-                                                            {
-                                                              "enum": [
-                                                                "$brand:colors.background",
-                                                                "$brand:colors.surface",
-                                                                "$brand:colors.text",
-                                                                "$brand:colors.textMuted",
-                                                                "$brand:colors.accent",
-                                                                "$brand:colors.accentStrong",
-                                                                "$brand:colors.accentSoft",
-                                                                "$brand:colors.success",
-                                                                "$brand:colors.warning",
-                                                                "$brand:colors.danger"
-                                                              ],
-                                                              "type": "string"
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-                                                          "type": "number"
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-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                        "role": {
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-                                                          "minLength": 1,
-                                                          "type": "string"
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-                                                        "roughness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                          "enum": [
-                                                            "physical",
-                                                            "unlit"
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-                                                          "type": "string"
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-                                                        "type"
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-                                                      "type": "object"
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-                                                    "maxItems": 16,
-                                                    "type": "array"
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-                                                  "opacity": {
-                                                    "default": 1,
-                                                    "maximum": 1,
-                                                    "minimum": 0,
-                                                    "type": "number"
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-                                                  "openAngle": {
-                                                    "maximum": 3.141592653589793,
-                                                    "minimum": 0,
-                                                    "type": "number"
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-                                                  "surfaces": {
-                                                    "additionalProperties": {
-                                                      "anyOf": [
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
-                                                            "assetSlot": {
-                                                              "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                              "maxLength": 64,
-                                                              "minLength": 1,
-                                                              "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                              "type": "string"
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-                                                            "source": {
-                                                              "const": "image",
-                                                              "type": "string"
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-                                                          "required": [
-                                                            "source",
-                                                            "assetSlot"
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-                                                          "type": "object"
-                                                        },
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
-                                                            "color": {
-                                                              "anyOf": [
-                                                                {
-                                                                  "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                  "type": "string"
-                                                                },
-                                                                {
-                                                                  "enum": [
-                                                                    "$brand:colors.background",
-                                                                    "$brand:colors.surface",
-                                                                    "$brand:colors.text",
-                                                                    "$brand:colors.textMuted",
-                                                                    "$brand:colors.accent",
-                                                                    "$brand:colors.accentStrong",
-                                                                    "$brand:colors.accentSoft",
-                                                                    "$brand:colors.success",
-                                                                    "$brand:colors.warning",
-                                                                    "$brand:colors.danger"
-                                                                  ],
-                                                                  "type": "string"
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-                                                            "source": {
-                                                              "const": "color",
-                                                              "type": "string"
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-                                                          "required": [
-                                                            "source",
-                                                            "color"
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-                                                          "type": "object"
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-                                                          "properties": {
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-                                                                  "const": 2,
-                                                                  "type": "number"
-                                                                },
-                                                                {
-                                                                  "const": 3,
-                                                                  "type": "number"
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-                                                              "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
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-                                                              "minimum": 0,
-                                                              "type": "integer"
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-                                                                  "type": "number"
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-                                                                "componentId",
-                                                                "sourceVersionId"
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-                                                              "type": "object"
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-                                                                  "maximum": 9007199254740991,
-                                                                  "type": "integer"
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-                                                                  "type": "integer"
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-                                                            "params": {
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-                                                                "$ref": "#/$defs/__schema0"
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-                                                              "propertyNames": {
-                                                                "type": "string"
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-                                                              "type": "object"
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-                                                            "source": {
-                                                              "const": "component",
-                                                              "type": "string"
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-                                                          "required": [
-                                                            "source",
-                                                            "component",
-                                                            "captureFrame",
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-                                                          "type": "object"
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-                                                              "type": "integer"
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-                                                              "type": "string"
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-                                                            "source": {
-                                                              "const": "video",
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-                                                              "minimum": 0,
-                                                              "type": "integer"
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-                                                          "required": [
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-                                                          "type": "object"
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-                                                    "type": "object"
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-                                                          0,
-                                                          0
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-                                                        "minItems": 3,
-                                                        "prefixItems": [
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-                                                          0,
-                                                          0
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-                                                        "maxItems": 3,
-                                                        "minItems": 3,
-                                                        "prefixItems": [
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-                                                        "type": "number"
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-                                                    "type": "object"
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-                                                    "minimum": 200,
-                                                    "type": "number"
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-                                                "required": [
-                                                  "kind",
-                                                  "id",
-                                                  "width",
-                                                  "openAngle"
-                                                ],
-                                                "type": "object"
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-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
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-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                                    "type": "string"
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-                                                    "const": "phone",
-                                                    "type": "string"
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-                                                      "properties": {
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-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                        "anisotropyRotation": {
-                                                          "type": "number"
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-                                                        "clearcoat": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "clearcoatRoughness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "color": {
-                                                          "anyOf": [
-                                                            {
-                                                              "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                              "type": "string"
-                                                            },
-                                                            {
-                                                              "enum": [
-                                                                "$brand:colors.background",
-                                                                "$brand:colors.surface",
-                                                                "$brand:colors.text",
-                                                                "$brand:colors.textMuted",
-                                                                "$brand:colors.accent",
-                                                                "$brand:colors.accentStrong",
-                                                                "$brand:colors.accentSoft",
-                                                                "$brand:colors.success",
-                                                                "$brand:colors.warning",
-                                                                "$brand:colors.danger"
-                                                              ],
-                                                              "type": "string"
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-                                                          "maximum": 2.333,
-                                                          "minimum": 1,
-                                                          "type": "number"
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-                                                        "metalness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                        "reflectivity": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                        "role": {
-                                                          "maxLength": 64,
-                                                          "minLength": 1,
-                                                          "type": "string"
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-                                                        "roughness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "type": {
-                                                          "enum": [
-                                                            "physical",
-                                                            "unlit"
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-                                                          "type": "string"
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-                                                      "required": [
-                                                        "role",
-                                                        "type"
-                                                      ],
-                                                      "type": "object"
-                                                    },
-                                                    "maxItems": 16,
-                                                    "type": "array"
-                                                  },
-                                                  "opacity": {
-                                                    "default": 1,
-                                                    "maximum": 1,
-                                                    "minimum": 0,
-                                                    "type": "number"
-                                                  },
-                                                  "surfaces": {
-                                                    "additionalProperties": {
-                                                      "anyOf": [
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
-                                                            "assetSlot": {
-                                                              "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                              "maxLength": 64,
-                                                              "minLength": 1,
-                                                              "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                              "type": "string"
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-                                                            "source": {
-                                                              "const": "image",
-                                                              "type": "string"
-                                                            }
-                                                          },
-                                                          "required": [
-                                                            "source",
-                                                            "assetSlot"
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-                                                          "type": "object"
-                                                        },
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
-                                                            "color": {
-                                                              "anyOf": [
-                                                                {
-                                                                  "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                  "type": "string"
-                                                                },
-                                                                {
-                                                                  "enum": [
-                                                                    "$brand:colors.background",
-                                                                    "$brand:colors.surface",
-                                                                    "$brand:colors.text",
-                                                                    "$brand:colors.textMuted",
-                                                                    "$brand:colors.accent",
-                                                                    "$brand:colors.accentStrong",
-                                                                    "$brand:colors.accentSoft",
-                                                                    "$brand:colors.success",
-                                                                    "$brand:colors.warning",
-                                                                    "$brand:colors.danger"
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-                                                                  "type": "string"
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-                                                            "source": {
-                                                              "const": "color",
-                                                              "type": "string"
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-                                                          "required": [
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-                                                            "color"
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-                                                          "type": "object"
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-                                                          "properties": {
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-                                                                  "const": 2,
-                                                                  "type": "number"
-                                                                },
-                                                                {
-                                                                  "const": 3,
-                                                                  "type": "number"
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-                                                              "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
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-                                                              "minimum": 0,
-                                                              "type": "integer"
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-                                                                  "type": "string"
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-                                                                "version": {
-                                                                  "const": 1,
-                                                                  "type": "number"
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-                                                              "required": [
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-                                                                "componentId",
-                                                                "sourceVersionId"
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-                                                              "type": "object"
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-                                                                  "maximum": 9007199254740991,
-                                                                  "type": "integer"
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-                                                                  "type": "integer"
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-                                                              "required": [
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-                                                              "type": "object"
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-                                                            "params": {
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-                                                                "$ref": "#/$defs/__schema0"
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-                                                              "propertyNames": {
-                                                                "type": "string"
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-                                                              "type": "object"
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-                                                            "source": {
-                                                              "const": "component",
-                                                              "type": "string"
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-                                                          "required": [
-                                                            "source",
-                                                            "component",
-                                                            "captureFrame",
-                                                            "layout"
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-                                                          "type": "object"
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-                                                              "minLength": 1,
-                                                              "type": "string"
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-                                                            "source": {
-                                                              "const": "video",
-                                                              "type": "string"
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-                                                              "maximum": 9007199254740991,
-                                                              "minimum": 0,
-                                                              "type": "integer"
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-                                                          0,
-                                                          0
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-                                                "required": [
-                                                  "kind",
-                                                  "id",
-                                                  "width"
-                                                ],
-                                                "type": "object"
-                                              },
-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
-                                                  "cornerRadius": {
-                                                    "default": 32,
-                                                    "minimum": 0,
-                                                    "type": "number"
-                                                  },
-                                                  "edgeRadius": {
-                                                    "default": 15,
-                                                    "minimum": 0,
-                                                    "type": "number"
-                                                  },
-                                                  "finish": {
-                                                    "default": "satin",
-                                                    "enum": [
-                                                      "satin",
-                                                      "brushed"
-                                                    ],
-                                                    "type": "string"
-                                                  },
-                                                  "height": {
-                                                    "maximum": 8000,
-                                                    "minimum": 40,
-                                                    "type": "number"
-                                                  },
-                                                  "id": {
-                                                    "maxLength": 64,
-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                                    "type": "string"
-                                                  },
-                                                  "kind": {
-                                                    "const": "slab",
-                                                    "type": "string"
-                                                  },
-                                                  "materials": {
-                                                    "items": {
-                                                      "additionalProperties": false,
-                                                      "properties": {
-                                                        "anisotropy": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "anisotropyRotation": {
-                                                          "type": "number"
-                                                        },
-                                                        "clearcoat": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "clearcoatRoughness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "color": {
-                                                          "anyOf": [
-                                                            {
-                                                              "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                              "type": "string"
-                                                            },
-                                                            {
-                                                              "enum": [
-                                                                "$brand:colors.background",
-                                                                "$brand:colors.surface",
-                                                                "$brand:colors.text",
-                                                                "$brand:colors.textMuted",
-                                                                "$brand:colors.accent",
-                                                                "$brand:colors.accentStrong",
-                                                                "$brand:colors.accentSoft",
-                                                                "$brand:colors.success",
-                                                                "$brand:colors.warning",
-                                                                "$brand:colors.danger"
-                                                              ],
-                                                              "type": "string"
-                                                            }
-                                                          ]
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-                                                          "maximum": 2.333,
-                                                          "minimum": 1,
-                                                          "type": "number"
-                                                        },
-                                                        "metalness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "reflectivity": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "role": {
-                                                          "maxLength": 64,
-                                                          "minLength": 1,
-                                                          "type": "string"
-                                                        },
-                                                        "roughness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "type": {
-                                                          "enum": [
-                                                            "physical",
-                                                            "unlit"
-                                                          ],
-                                                          "type": "string"
-                                                        }
-                                                      },
-                                                      "required": [
-                                                        "role",
-                                                        "type"
-                                                      ],
-                                                      "type": "object"
-                                                    },
-                                                    "maxItems": 16,
-                                                    "type": "array"
-                                                  },
-                                                  "opacity": {
-                                                    "default": 1,
-                                                    "maximum": 1,
-                                                    "minimum": 0,
-                                                    "type": "number"
-                                                  },
-                                                  "surfaces": {
-                                                    "additionalProperties": {
-                                                      "anyOf": [
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
-                                                            "assetSlot": {
-                                                              "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                              "maxLength": 64,
-                                                              "minLength": 1,
-                                                              "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                              "type": "string"
-                                                            },
-                                                            "source": {
-                                                              "const": "image",
-                                                              "type": "string"
-                                                            }
-                                                          },
-                                                          "required": [
-                                                            "source",
-                                                            "assetSlot"
-                                                          ],
-                                                          "type": "object"
-                                                        },
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
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-                                                              "anyOf": [
-                                                                {
-                                                                  "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                  "type": "string"
-                                                                },
-                                                                {
-                                                                  "enum": [
-                                                                    "$brand:colors.background",
-                                                                    "$brand:colors.surface",
-                                                                    "$brand:colors.text",
-                                                                    "$brand:colors.textMuted",
-                                                                    "$brand:colors.accent",
-                                                                    "$brand:colors.accentStrong",
-                                                                    "$brand:colors.accentSoft",
-                                                                    "$brand:colors.success",
-                                                                    "$brand:colors.warning",
-                                                                    "$brand:colors.danger"
-                                                                  ],
-                                                                  "type": "string"
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-                                                            "source": {
-                                                              "const": "color",
-                                                              "type": "string"
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-                                                          "required": [
-                                                            "source",
-                                                            "color"
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-                                                          "type": "object"
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-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
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-                                                                {
-                                                                  "const": 2,
-                                                                  "type": "number"
-                                                                },
-                                                                {
-                                                                  "const": 3,
-                                                                  "type": "number"
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-                                                              ],
-                                                              "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
-                                                            },
-                                                            "captureFrame": {
-                                                              "maximum": 9007199254740991,
-                                                              "minimum": 0,
-                                                              "type": "integer"
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-                                                                  "type": "string"
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-                                                                  "const": 1,
-                                                                  "type": "number"
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-                                                                "componentId",
-                                                                "sourceVersionId"
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-                                                              "type": "object"
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-                                                                  "maximum": 9007199254740991,
-                                                                  "type": "integer"
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-                                                                  "maximum": 9007199254740991,
-                                                                  "type": "integer"
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-                                                                "height"
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-                                                              "type": "object"
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-                                                            "params": {
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-                                                                "$ref": "#/$defs/__schema0"
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-                                                              "propertyNames": {
-                                                                "type": "string"
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-                                                              "type": "object"
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-                                                            "source": {
-                                                              "const": "component",
-                                                              "type": "string"
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-                                                          "required": [
-                                                            "source",
-                                                            "component",
-                                                            "captureFrame",
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-                                                          "type": "object"
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-                                                              "type": "integer"
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-                                                              "type": "string"
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-                                                              "const": "video",
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-                                                              "type": "integer"
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-                                                    "type": "object"
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-                                                          0,
-                                                          0
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-                                                        "minItems": 3,
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-                                                        "type": "array"
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-                                                          0
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-                                                        "maxItems": 3,
-                                                        "minItems": 3,
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-                                                    "type": "object"
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-                                                    "minimum": 40,
-                                                    "type": "number"
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-                                                  "kind",
-                                                  "id",
-                                                  "width",
-                                                  "height"
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-                                                "type": "object"
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-                                              {
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-                                                    "type": "string"
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-                                                    "type": "boolean"
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-                                                    "enum": [
-                                                      "contain",
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-                                                    "type": "string"
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-                                                    "maximum": 8000,
-                                                    "minimum": 40,
-                                                    "type": "number"
-                                                  },
-                                                  "id": {
-                                                    "maxLength": 64,
-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                                    "type": "string"
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-                                                  "kind": {
-                                                    "const": "page",
-                                                    "type": "string"
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-                                                  "materials": {
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-                                                      "properties": {
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-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "anisotropyRotation": {
-                                                          "type": "number"
-                                                        },
-                                                        "clearcoat": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "clearcoatRoughness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "color": {
-                                                          "anyOf": [
-                                                            {
-                                                              "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                              "type": "string"
-                                                            },
-                                                            {
-                                                              "enum": [
-                                                                "$brand:colors.background",
-                                                                "$brand:colors.surface",
-                                                                "$brand:colors.text",
-                                                                "$brand:colors.textMuted",
-                                                                "$brand:colors.accent",
-                                                                "$brand:colors.accentStrong",
-                                                                "$brand:colors.accentSoft",
-                                                                "$brand:colors.success",
-                                                                "$brand:colors.warning",
-                                                                "$brand:colors.danger"
-                                                              ],
-                                                              "type": "string"
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-                                                          "maximum": 2.333,
-                                                          "minimum": 1,
-                                                          "type": "number"
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-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                        "reflectivity": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                        "role": {
-                                                          "maxLength": 64,
-                                                          "minLength": 1,
-                                                          "type": "string"
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-                                                        "roughness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "type": {
-                                                          "enum": [
-                                                            "physical",
-                                                            "unlit"
-                                                          ],
-                                                          "type": "string"
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-                                                        "type"
-                                                      ],
-                                                      "type": "object"
-                                                    },
-                                                    "maxItems": 16,
-                                                    "type": "array"
-                                                  },
-                                                  "opacity": {
-                                                    "default": 1,
-                                                    "maximum": 1,
-                                                    "minimum": 0,
-                                                    "type": "number"
-                                                  },
-                                                  "surfaces": {
-                                                    "additionalProperties": {
-                                                      "anyOf": [
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
-                                                            "assetSlot": {
-                                                              "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                              "maxLength": 64,
-                                                              "minLength": 1,
-                                                              "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                              "type": "string"
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-                                                            "source": {
-                                                              "const": "image",
-                                                              "type": "string"
-                                                            }
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-                                                          "required": [
-                                                            "source",
-                                                            "assetSlot"
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-                                                          "type": "object"
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-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
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-                                                              "anyOf": [
-                                                                {
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-                                                                  "type": "string"
-                                                                },
-                                                                {
-                                                                  "enum": [
-                                                                    "$brand:colors.background",
-                                                                    "$brand:colors.surface",
-                                                                    "$brand:colors.text",
-                                                                    "$brand:colors.textMuted",
-                                                                    "$brand:colors.accent",
-                                                                    "$brand:colors.accentStrong",
-                                                                    "$brand:colors.accentSoft",
-                                                                    "$brand:colors.success",
-                                                                    "$brand:colors.warning",
-                                                                    "$brand:colors.danger"
-                                                                  ],
-                                                                  "type": "string"
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-                                                            "source": {
-                                                              "const": "color",
-                                                              "type": "string"
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-                                                          "required": [
-                                                            "source",
-                                                            "color"
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-                                                          "type": "object"
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-                                                          "properties": {
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-                                                                {
-                                                                  "const": 2,
-                                                                  "type": "number"
-                                                                },
-                                                                {
-                                                                  "const": 3,
-                                                                  "type": "number"
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-                                                              "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
-                                                            },
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-                                                              "minimum": 0,
-                                                              "type": "integer"
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-                                                                  "const": 1,
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-                                                                "componentId",
-                                                                "sourceVersionId"
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-                                                              "propertyNames": {
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-                                                              "type": "object"
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-                                                            "source": {
-                                                              "const": "component",
-                                                              "type": "string"
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-                                                          "required": [
-                                                            "source",
-                                                            "component",
-                                                            "captureFrame",
-                                                            "layout"
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-                                                          "type": "object"
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-                                                              "minLength": 1,
-                                                              "type": "string"
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-                                                            "source": {
-                                                              "const": "video",
-                                                              "type": "string"
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-                                                              "minimum": 0,
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-                                                          0,
-                                                          0
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-                                                    "type": "number"
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-                                                                      "$brand:colors.danger"
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-                                                    "const": "component",
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-                                                  "component",
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-                                                    "const": "video",
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-                                                0,
-                                                0
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-                                          "type": "number"
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-                                      "type": "object"
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-                                    {
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-                                          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                          "type": "string"
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-                                        "kind": {
-                                          "const": "phone",
-                                          "type": "string"
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-                                                "type": "number"
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-                                                "type": "number"
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-                                                "minimum": 0,
-                                                "type": "number"
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-                                                "minimum": 0,
-                                                "type": "number"
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-                                                    "type": "string"
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-                                                      "$brand:colors.surface",
-                                                      "$brand:colors.text",
-                                                      "$brand:colors.textMuted",
-                                                      "$brand:colors.accent",
-                                                      "$brand:colors.accentStrong",
-                                                      "$brand:colors.accentSoft",
-                                                      "$brand:colors.success",
-                                                      "$brand:colors.warning",
-                                                      "$brand:colors.danger"
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-                                                "type": "number"
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-                                              "type"
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-                                          "type": "array"
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-                                          "default": 1,
-                                          "maximum": 1,
-                                          "minimum": 0,
-                                          "type": "number"
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-                                        "surfaces": {
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-                                            "anyOf": [
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-                                                "additionalProperties": false,
-                                                "properties": {
-                                                  "assetSlot": {
-                                                    "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                    "maxLength": 64,
-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
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-                                                    "const": "image",
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-                                                        "type": "string"
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-                                                          "$brand:colors.text",
-                                                          "$brand:colors.textMuted",
-                                                          "$brand:colors.accent",
-                                                          "$brand:colors.accentStrong",
-                                                          "$brand:colors.accentSoft",
-                                                          "$brand:colors.success",
-                                                          "$brand:colors.warning",
-                                                          "$brand:colors.danger"
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-                                                    "const": "color",
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-                                                        "const": 2,
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-                                                      {
-                                                        "const": 3,
-                                                        "type": "number"
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-                                                    "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
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-                                                    "type": "integer"
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-                                                    "const": "component",
-                                                    "type": "string"
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-                                                    "const": "video",
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-                                          "type": "number"
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-                                        "finish": {
-                                          "default": "satin",
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-                                          "type": "number"
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-                                          "minLength": 1,
-                                          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                          "type": "string"
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-                                        "kind": {
-                                          "const": "slab",
-                                          "type": "string"
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-                                                "type": "number"
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-                                                "type": "number"
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-                                              "clearcoat": {
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-                                                "type": "number"
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-                                                "minimum": 0,
-                                                "type": "number"
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-                                                    "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                    "type": "string"
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-                                                      "$brand:colors.background",
-                                                      "$brand:colors.surface",
-                                                      "$brand:colors.text",
-                                                      "$brand:colors.textMuted",
-                                                      "$brand:colors.accent",
-                                                      "$brand:colors.accentStrong",
-                                                      "$brand:colors.accentSoft",
-                                                      "$brand:colors.success",
-                                                      "$brand:colors.warning",
-                                                      "$brand:colors.danger"
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-                                                    "type": "string"
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-                                                "type": "number"
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-                                                "type": "string"
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-                                                "maximum": 1,
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-                                                "type": "number"
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-                                              "type": {
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-                                                  "physical",
-                                                  "unlit"
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-                                              "type"
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-                                            "type": "object"
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-                                          "maxItems": 16,
-                                          "type": "array"
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-                                          "default": 1,
-                                          "maximum": 1,
-                                          "minimum": 0,
-                                          "type": "number"
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-                                        "surfaces": {
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-                                            "anyOf": [
-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
-                                                  "assetSlot": {
-                                                    "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                    "maxLength": 64,
-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                    "type": "string"
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-                                                  "source": {
-                                                    "const": "image",
-                                                    "type": "string"
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-                                                "required": [
-                                                  "source",
-                                                  "assetSlot"
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-                                                "type": "object"
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-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
-                                                  "color": {
-                                                    "anyOf": [
-                                                      {
-                                                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                        "type": "string"
-                                                      },
-                                                      {
-                                                        "enum": [
-                                                          "$brand:colors.background",
-                                                          "$brand:colors.surface",
-                                                          "$brand:colors.text",
-                                                          "$brand:colors.textMuted",
-                                                          "$brand:colors.accent",
-                                                          "$brand:colors.accentStrong",
-                                                          "$brand:colors.accentSoft",
-                                                          "$brand:colors.success",
-                                                          "$brand:colors.warning",
-                                                          "$brand:colors.danger"
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-                                                        "type": "string"
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-                                                  "source": {
-                                                    "const": "color",
-                                                    "type": "string"
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-                                                  "color"
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-                                                "type": "object"
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-                                                        "const": 2,
-                                                        "type": "number"
-                                                      },
-                                                      {
-                                                        "const": 3,
-                                                        "type": "number"
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-                                                    "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
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-                                                    "minimum": 0,
-                                                    "type": "integer"
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-                                                        "type": "string"
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-                                                        "type": "string"
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-                                                      "version": {
-                                                        "const": 1,
-                                                        "type": "number"
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-                                                    "required": [
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-                                                      "componentId",
-                                                      "sourceVersionId"
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-                                                    "type": "object"
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-                                                        "maximum": 9007199254740991,
-                                                        "type": "integer"
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-                                                        "maximum": 9007199254740991,
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-                                                    "type": "object"
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-                                                  "params": {
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-                                                    "propertyNames": {
-                                                      "type": "string"
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-                                                    "type": "object"
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-                                                  "source": {
-                                                    "const": "component",
-                                                    "type": "string"
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-                                                "required": [
-                                                  "source",
-                                                  "component",
-                                                  "captureFrame",
-                                                  "layout"
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-                                                "type": "object"
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-                                                    "maximum": 9007199254740991,
-                                                    "type": "integer"
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-                                                    "minLength": 1,
-                                                    "type": "string"
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-                                                  "source": {
-                                                    "const": "video",
-                                                    "type": "string"
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-                                          "const": "component",
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-                                          "const": "component",
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-                                "type": "number"
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-                                "type": "string"
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-                                "type": "string"
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-                                            "$brand:colors.textMuted",
-                                            "$brand:colors.accent",
-                                            "$brand:colors.accentStrong",
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-                                            "$brand:colors.success",
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-                                            "$brand:colors.danger"
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-                                "type": "number"
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-                                                "$brand:colors.danger"
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-                                          "type": "string"
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-                                            "$brand:colors.accentStrong",
-                                            "$brand:colors.accentSoft",
-                                            "$brand:colors.success",
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-                                            "$brand:colors.danger"
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-                                          "description": "Image asset slot name bound by the clip assets map; never a URL.",
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-                                                "$brand:colors.accentStrong",
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-                                                "$brand:colors.success",
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-                                                "$brand:colors.danger"
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-                          "maxItems": 3,
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-                            "type": "number"
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-                                "type": "string"
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-                                  "$brand:colors.accent",
-                                  "$brand:colors.accentStrong",
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-                                  "$brand:colors.success",
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-                                "const": "component",
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-                                "type": "string"
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-                                  "$brand:colors.success",
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-                                  "$brand:colors.danger"
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-                                "description": "Image asset slot name bound by the clip assets map; never a URL.",
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-                                "minLength": 1,
-                                "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                "type": "string"
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-                                    "type": "string"
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-                                      "$brand:colors.surface",
-                                      "$brand:colors.text",
-                                      "$brand:colors.textMuted",
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-                                      "$brand:colors.accentStrong",
-                                      "$brand:colors.accentSoft",
-                                      "$brand:colors.success",
-                                      "$brand:colors.warning",
-                                      "$brand:colors.danger"
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-                                "const": "color",
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-      "trackId": {
-        "type": "string"
-      },
-      "transitionIn": {
-        "additionalProperties": false,
-        "description": "Inter-scene transition.",
-        "properties": {
-          "duration": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "type": {
-            "enum": [
-              "cut",
-              "fade",
-              "dissolve",
-              "wipe"
-            ],
-            "type": "string"
-          }
-        },
-        "required": [
-          "type"
-        ],
-        "type": "object"
-      },
-      "type": {
-        "const": "scene.add",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId",
-      "startTime",
-      "duration",
-      "scene",
-      "assets"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Revise a scene shot in place by clip id. Send a replacement `scene` and/or `assets`; timing changes use the ordinary clip timing fields (`startTime`, `duration`, `transitionIn`). Omitted fields keep their persisted values and the MERGED result is re-validated as a whole, so a partial edit cannot leave the shot invalid. Changing only values or asset IDs updates props and bindings and REUSES the pinned source; changing the referenced SLOT SET regenerates the wrapper manifest and registers a new immutable source version atomically. Undo restores the source reference, spec, bindings and timing together. Topology, asset bindings, text content, font properties, device kind and colours are STATIC within a shot's animation — change them here (a revised spec) rather than trying to animate them. This is not a source trim or slip: a shortened or extended clip resamples the SAME normalized animation over its new duration, and trim/slip requests on generated animation are rejected rather than reinterpreted as media trims. In one batch, `scene.update` may target a shot added by an earlier `scene.add`. ASSETS: `assets` binds each slot name a layer references to a media id in the same project, and the slot's declared KIND decides what it admits — an image slot takes PNG, JPEG or WebP, a video slot MP4 or WebM. Binding the wrong kind is refused with the slot's path.",
-    "properties": {
-      "assets": {
-        "additionalProperties": {
-          "type": "string"
-        },
-        "propertyNames": {
-          "type": "string"
-        },
-        "type": "object"
-      },
-      "clipId": {
-        "type": "string"
-      },
-      "duration": {
-        "exclusiveMinimum": 0,
-        "type": "number"
-      },
-      "scene": {
-        "additionalProperties": false,
-        "description": "A version-2 scene shot: a self-contained 3D world-object shot that scene.add / scene.update materializes into an ordinary component clip. The shot owns its layers, camera, lighting, backdrop and normalized local animation; the composition owns start, duration, ordering, cuts and transitions. Coordinates are REFERENCE PIXELS: origin at frame centre, +X right, +Y down, +Z toward the viewer. referenceSize must have the SAME aspect ratio as the composition format; mismatch fails instead of cropping. At equal aspect ratio the shot scales uniformly by outputWidth/referenceWidth. A segment's easing belongs to the keyframe it ARRIVES at; the first keyframe has no easing. Authoring limits: 32 layers, 4 devices, 16 distinct image slots, 256 keyframes per channel, 2048 keyframes per shot. Version 2 supports nested groups, procedural slab/page/phone/laptop objects, screen- and world-space text, admitted image/component/video surfaces, fixed photographic and generated studio environments, transparent/solid/linear/radial backdrops, constraints, focus, grain and vignette. Raw HTML, custom shader props, imported GLB models, arbitrary external HDR environments, skeletal animation and physics are refused with an exact field path.",
-        "properties": {
-          "animation": {
-            "default": [],
-            "items": {
-              "additionalProperties": false,
-              "properties": {
-                "keyframes": {
-                  "items": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "at": {
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "easing": {
-                        "anyOf": [
-                          {
-                            "additionalProperties": false,
-                            "properties": {
-                              "kind": {
-                                "const": "linear",
-                                "type": "string"
-                              }
-                            },
-                            "required": [
-                              "kind"
-                            ],
-                            "type": "object"
-                          },
-                          {
-                            "additionalProperties": false,
-                            "properties": {
-                              "kind": {
-                                "const": "hold",
-                                "type": "string"
-                              }
-                            },
-                            "required": [
-                              "kind"
-                            ],
-                            "type": "object"
-                          },
-                          {
-                            "additionalProperties": false,
-                            "properties": {
-                              "kind": {
-                                "const": "bezier",
-                                "type": "string"
-                              },
-                              "x1": {
-                                "maximum": 1,
-                                "minimum": 0,
-                                "type": "number"
-                              },
-                              "x2": {
-                                "maximum": 1,
-                                "minimum": 0,
-                                "type": "number"
-                              },
-                              "y1": {
-                                "maximum": 5,
-                                "minimum": -4,
-                                "type": "number"
-                              },
-                              "y2": {
-                                "maximum": 5,
-                                "minimum": -4,
-                                "type": "number"
-                              }
-                            },
-                            "required": [
-                              "kind",
-                              "x1",
-                              "y1",
-                              "x2",
-                              "y2"
-                            ],
-                            "type": "object"
-                          }
-                        ]
-                      },
-                      "value": {
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "at",
-                      "value"
-                    ],
-                    "type": "object"
-                  },
-                  "maxItems": 256,
-                  "minItems": 1,
-                  "type": "array"
-                },
-                "property": {
-                  "enum": [
-                    "positionX",
-                    "positionY",
-                    "positionZ",
-                    "rotationX",
-                    "rotationY",
-                    "rotationZ",
-                    "fov",
-                    "scale",
-                    "opacity",
-                    "openAngle",
-                    "x",
-                    "y",
-                    "rotation",
-                    "intensity",
-                    "distance",
-                    "range",
-                    "maxBlur"
-                  ],
-                  "type": "string"
-                },
-                "target": {
-                  "anyOf": [
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "kind": {
-                          "const": "camera",
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "kind"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "kind": {
-                          "const": "layer",
-                          "type": "string"
-                        },
-                        "layerId": {
-                          "maxLength": 64,
-                          "minLength": 1,
-                          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "kind",
-                        "layerId"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "kind": {
-                          "const": "environment",
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "kind"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "kind": {
-                          "const": "focus",
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "kind"
-                      ],
-                      "type": "object"
-                    }
-                  ]
-                }
-              },
-              "required": [
-                "target",
-                "property",
-                "keyframes"
-              ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "backdrop": {
-            "anyOf": [
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "kind": {
-                    "const": "transparent",
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "kind"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "color": {
-                    "anyOf": [
-                      {
-                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                        "type": "string"
-                      },
-                      {
-                        "enum": [
-                          "$brand:colors.background",
-                          "$brand:colors.surface",
-                          "$brand:colors.text",
-                          "$brand:colors.textMuted",
-                          "$brand:colors.accent",
-                          "$brand:colors.accentStrong",
-                          "$brand:colors.accentSoft",
-                          "$brand:colors.success",
-                          "$brand:colors.warning",
-                          "$brand:colors.danger"
-                        ],
-                        "type": "string"
-                      }
-                    ]
-                  },
-                  "kind": {
-                    "const": "solid",
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "color"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "angle": {
-                    "default": 0,
-                    "type": "number"
-                  },
-                  "kind": {
-                    "const": "linear",
-                    "type": "string"
-                  },
-                  "stops": {
-                    "items": {
-                      "additionalProperties": false,
-                      "properties": {
-                        "at": {
-                          "maximum": 1,
-                          "minimum": 0,
-                          "type": "number"
-                        },
-                        "color": {
-                          "anyOf": [
-                            {
-                              "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                              "type": "string"
-                            },
-                            {
-                              "enum": [
-                                "$brand:colors.background",
-                                "$brand:colors.surface",
-                                "$brand:colors.text",
-                                "$brand:colors.textMuted",
-                                "$brand:colors.accent",
-                                "$brand:colors.accentStrong",
-                                "$brand:colors.accentSoft",
-                                "$brand:colors.success",
-                                "$brand:colors.warning",
-                                "$brand:colors.danger"
-                              ],
-                              "type": "string"
-                            }
-                          ]
-                        }
-                      },
-                      "required": [
-                        "at",
-                        "color"
-                      ],
-                      "type": "object"
-                    },
-                    "maxItems": 8,
-                    "minItems": 2,
-                    "type": "array"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "stops"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "at": {
-                    "default": [
-                      0.5,
-                      0.5
-                    ],
-                    "items": false,
-                    "maxItems": 2,
-                    "minItems": 2,
-                    "prefixItems": [
-                      {
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      {
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      }
-                    ],
-                    "type": "array"
-                  },
-                  "kind": {
-                    "const": "radial",
-                    "type": "string"
-                  },
-                  "stops": {
-                    "items": {
-                      "additionalProperties": false,
-                      "properties": {
-                        "at": {
-                          "maximum": 1,
-                          "minimum": 0,
-                          "type": "number"
-                        },
-                        "color": {
-                          "anyOf": [
-                            {
-                              "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                              "type": "string"
-                            },
-                            {
-                              "enum": [
-                                "$brand:colors.background",
-                                "$brand:colors.surface",
-                                "$brand:colors.text",
-                                "$brand:colors.textMuted",
-                                "$brand:colors.accent",
-                                "$brand:colors.accentStrong",
-                                "$brand:colors.accentSoft",
-                                "$brand:colors.success",
-                                "$brand:colors.warning",
-                                "$brand:colors.danger"
-                              ],
-                              "type": "string"
-                            }
-                          ]
-                        }
-                      },
-                      "required": [
-                        "at",
-                        "color"
-                      ],
-                      "type": "object"
-                    },
-                    "maxItems": 8,
-                    "minItems": 2,
-                    "type": "array"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "stops"
-                ],
-                "type": "object"
-              }
-            ],
-            "default": {
-              "kind": "transparent"
-            }
-          },
-          "camera": {
-            "additionalProperties": false,
-            "properties": {
-              "fov": {
-                "maximum": 1.3962634015954636,
-                "minimum": 0.3141592653589793,
-                "type": "number"
-              },
-              "position": {
-                "items": false,
-                "maxItems": 3,
-                "minItems": 3,
-                "prefixItems": [
-                  {
-                    "type": "number"
-                  },
-                  {
-                    "type": "number"
-                  },
-                  {
-                    "type": "number"
-                  }
-                ],
-                "type": "array"
-              },
-              "rotation": {
-                "items": false,
-                "maxItems": 3,
-                "minItems": 3,
-                "prefixItems": [
-                  {
-                    "type": "number"
-                  },
-                  {
-                    "type": "number"
-                  },
-                  {
-                    "type": "number"
-                  }
-                ],
-                "type": "array"
-              }
-            },
-            "type": "object"
-          },
-          "constraints": {
-            "default": [],
-            "items": {
-              "additionalProperties": false,
-              "properties": {
-                "gap": {
-                  "exclusiveMinimum": 0,
-                  "type": "number"
-                },
-                "kind": {
-                  "const": "minSeparation",
-                  "type": "string"
-                },
-                "objects": {
-                  "items": {
-                    "maxLength": 64,
-                    "minLength": 1,
-                    "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                    "type": "string"
-                  },
-                  "minItems": 2,
-                  "type": "array"
-                }
-              },
-              "required": [
-                "kind",
-                "objects",
-                "gap"
-              ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "environment": {
-            "anyOf": [
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "floorY": {
-                    "default": -420,
-                    "type": "number"
-                  },
-                  "intensity": {
-                    "default": 1,
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "kind": {
-                    "const": "studio",
-                    "type": "string"
-                  },
-                  "lightingProfile": {
-                    "default": "studio",
-                    "enum": [
-                      "studio",
-                      "studio-edge"
-                    ],
-                    "type": "string"
-                  },
-                  "preset": {
-                    "default": "soft",
-                    "enum": [
-                      "soft",
-                      "key",
-                      "rim"
-                    ],
-                    "type": "string"
-                  },
-                  "shadowOpacity": {
-                    "default": 0.5,
-                    "maximum": 1,
-                    "minimum": 0,
-                    "type": "number"
-                  }
-                },
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "kind": {
-                    "const": "photographic-studio-v1",
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "kind"
-                ],
-                "type": "object"
-              }
-            ],
-            "default": {
-              "floorY": -420,
-              "intensity": 1,
-              "lightingProfile": "studio",
-              "preset": "soft",
-              "shadowOpacity": 0.5
-            }
-          },
-          "layers": {
-            "items": {
-              "anyOf": [
-                {
-                  "additionalProperties": false,
-                  "properties": {
-                    "children": {
-                      "items": {
-                        "anyOf": [
-                          {
-                            "additionalProperties": false,
-                            "properties": {
-                              "children": {
-                                "items": {
-                                  "anyOf": [
-                                    {
-                                      "additionalProperties": false,
-                                      "properties": {
-                                        "children": {
-                                          "items": {
-                                            "anyOf": [
-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
-                                                  "children": {
-                                                    "items": {
-                                                      "anyOf": [
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
-                                                            "id": {
-                                                              "maxLength": 64,
-                                                              "minLength": 1,
-                                                              "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                                              "type": "string"
-                                                            },
-                                                            "kind": {
-                                                              "const": "laptop",
-                                                              "type": "string"
-                                                            },
-                                                            "materials": {
-                                                              "items": {
-                                                                "additionalProperties": false,
-                                                                "properties": {
-                                                                  "anisotropy": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "anisotropyRotation": {
-                                                                    "type": "number"
-                                                                  },
-                                                                  "clearcoat": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "clearcoatRoughness": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "color": {
-                                                                    "anyOf": [
-                                                                      {
-                                                                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                        "type": "string"
-                                                                      },
-                                                                      {
-                                                                        "enum": [
-                                                                          "$brand:colors.background",
-                                                                          "$brand:colors.surface",
-                                                                          "$brand:colors.text",
-                                                                          "$brand:colors.textMuted",
-                                                                          "$brand:colors.accent",
-                                                                          "$brand:colors.accentStrong",
-                                                                          "$brand:colors.accentSoft",
-                                                                          "$brand:colors.success",
-                                                                          "$brand:colors.warning",
-                                                                          "$brand:colors.danger"
-                                                                        ],
-                                                                        "type": "string"
-                                                                      }
-                                                                    ]
-                                                                  },
-                                                                  "ior": {
-                                                                    "maximum": 2.333,
-                                                                    "minimum": 1,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "metalness": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "reflectivity": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "role": {
-                                                                    "maxLength": 64,
-                                                                    "minLength": 1,
-                                                                    "type": "string"
-                                                                  },
-                                                                  "roughness": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "type": {
-                                                                    "enum": [
-                                                                      "physical",
-                                                                      "unlit"
-                                                                    ],
-                                                                    "type": "string"
-                                                                  }
-                                                                },
-                                                                "required": [
-                                                                  "role",
-                                                                  "type"
-                                                                ],
-                                                                "type": "object"
-                                                              },
-                                                              "maxItems": 16,
-                                                              "type": "array"
-                                                            },
-                                                            "opacity": {
-                                                              "default": 1,
-                                                              "maximum": 1,
-                                                              "minimum": 0,
-                                                              "type": "number"
-                                                            },
-                                                            "openAngle": {
-                                                              "maximum": 3.141592653589793,
-                                                              "minimum": 0,
-                                                              "type": "number"
-                                                            },
-                                                            "surfaces": {
-                                                              "additionalProperties": {
-                                                                "anyOf": [
-                                                                  {
-                                                                    "additionalProperties": false,
-                                                                    "properties": {
-                                                                      "assetSlot": {
-                                                                        "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                                        "maxLength": 64,
-                                                                        "minLength": 1,
-                                                                        "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                                        "type": "string"
-                                                                      },
-                                                                      "source": {
-                                                                        "const": "image",
-                                                                        "type": "string"
-                                                                      }
-                                                                    },
-                                                                    "required": [
-                                                                      "source",
-                                                                      "assetSlot"
-                                                                    ],
-                                                                    "type": "object"
-                                                                  },
-                                                                  {
-                                                                    "additionalProperties": false,
-                                                                    "properties": {
-                                                                      "color": {
-                                                                        "anyOf": [
-                                                                          {
-                                                                            "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                            "type": "string"
-                                                                          },
-                                                                          {
-                                                                            "enum": [
-                                                                              "$brand:colors.background",
-                                                                              "$brand:colors.surface",
-                                                                              "$brand:colors.text",
-                                                                              "$brand:colors.textMuted",
-                                                                              "$brand:colors.accent",
-                                                                              "$brand:colors.accentStrong",
-                                                                              "$brand:colors.accentSoft",
-                                                                              "$brand:colors.success",
-                                                                              "$brand:colors.warning",
-                                                                              "$brand:colors.danger"
-                                                                            ],
-                                                                            "type": "string"
-                                                                          }
-                                                                        ]
-                                                                      },
-                                                                      "source": {
-                                                                        "const": "color",
-                                                                        "type": "string"
-                                                                      }
-                                                                    },
-                                                                    "required": [
-                                                                      "source",
-                                                                      "color"
-                                                                    ],
-                                                                    "type": "object"
-                                                                  },
-                                                                  {
-                                                                    "additionalProperties": false,
-                                                                    "properties": {
-                                                                      "bakeScale": {
-                                                                        "anyOf": [
-                                                                          {
-                                                                            "const": 2,
-                                                                            "type": "number"
-                                                                          },
-                                                                          {
-                                                                            "const": 3,
-                                                                            "type": "number"
-                                                                          }
-                                                                        ],
-                                                                        "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
-                                                                      },
-                                                                      "captureFrame": {
-                                                                        "maximum": 9007199254740991,
-                                                                        "minimum": 0,
-                                                                        "type": "integer"
-                                                                      },
-                                                                      "component": {
-                                                                        "additionalProperties": false,
-                                                                        "properties": {
-                                                                          "componentId": {
-                                                                            "maxLength": 256,
-                                                                            "minLength": 1,
-                                                                            "type": "string"
-                                                                          },
-                                                                          "sourceVersionId": {
-                                                                            "pattern": "^[a-f0-9]{64}$",
-                                                                            "type": "string"
-                                                                          },
-                                                                          "version": {
-                                                                            "const": 1,
-                                                                            "type": "number"
-                                                                          }
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-                                                                        "required": [
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-                                                                          "componentId",
-                                                                          "sourceVersionId"
-                                                                        ],
-                                                                        "type": "object"
-                                                                      },
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-                                                                            "maximum": 9007199254740991,
-                                                                            "type": "integer"
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-                                                                          "width": {
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-                                                                            "maximum": 9007199254740991,
-                                                                            "type": "integer"
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-                                                                        "required": [
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-                                                                          "height"
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-                                                                        "type": "object"
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-                                                                        },
-                                                                        "propertyNames": {
-                                                                          "type": "string"
-                                                                        },
-                                                                        "type": "object"
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-                                                                      "source": {
-                                                                        "const": "component",
-                                                                        "type": "string"
-                                                                      }
-                                                                    },
-                                                                    "required": [
-                                                                      "source",
-                                                                      "component",
-                                                                      "captureFrame",
-                                                                      "layout"
-                                                                    ],
-                                                                    "type": "object"
-                                                                  },
-                                                                  {
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-                                                                        "maximum": 9007199254740991,
-                                                                        "type": "integer"
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-                                                                        "minLength": 1,
-                                                                        "type": "string"
-                                                                      },
-                                                                      "source": {
-                                                                        "const": "video",
-                                                                        "type": "string"
-                                                                      },
-                                                                      "startFrame": {
-                                                                        "default": 0,
-                                                                        "maximum": 9007199254740991,
-                                                                        "minimum": 0,
-                                                                        "type": "integer"
-                                                                      }
-                                                                    },
-                                                                    "required": [
-                                                                      "source",
-                                                                      "mediaId"
-                                                                    ],
-                                                                    "type": "object"
-                                                                  }
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-                                                              "propertyNames": {
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-                                                              },
-                                                              "type": "object"
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-                                                              "default": {
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-                                                                  0,
-                                                                  0
-                                                                ],
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-                                                                  0,
-                                                                  0
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-                                                              "properties": {
-                                                                "position": {
-                                                                  "default": [
-                                                                    0,
-                                                                    0,
-                                                                    0
-                                                                  ],
-                                                                  "items": false,
-                                                                  "maxItems": 3,
-                                                                  "minItems": 3,
-                                                                  "prefixItems": [
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-                                                                      "type": "number"
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-                                                                    {
-                                                                      "type": "number"
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-                                                                    {
-                                                                      "type": "number"
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-                                                                "rotation": {
-                                                                  "default": [
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-                                                                    0,
-                                                                    0
-                                                                  ],
-                                                                  "items": false,
-                                                                  "maxItems": 3,
-                                                                  "minItems": 3,
-                                                                  "prefixItems": [
-                                                                    {
-                                                                      "type": "number"
-                                                                    },
-                                                                    {
-                                                                      "type": "number"
-                                                                    },
-                                                                    {
-                                                                      "type": "number"
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-                                                                  ],
-                                                                  "type": "array"
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-                                                                "scale": {
-                                                                  "default": 1,
-                                                                  "exclusiveMinimum": 0,
-                                                                  "type": "number"
-                                                                }
-                                                              },
-                                                              "type": "object"
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-                                                            "width": {
-                                                              "maximum": 4000,
-                                                              "minimum": 200,
-                                                              "type": "number"
-                                                            }
-                                                          },
-                                                          "required": [
-                                                            "kind",
-                                                            "id",
-                                                            "width",
-                                                            "openAngle"
-                                                          ],
-                                                          "type": "object"
-                                                        },
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
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-                                                              "minLength": 1,
-                                                              "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                                              "type": "string"
-                                                            },
-                                                            "kind": {
-                                                              "const": "phone",
-                                                              "type": "string"
-                                                            },
-                                                            "materials": {
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-                                                                "additionalProperties": false,
-                                                                "properties": {
-                                                                  "anisotropy": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "anisotropyRotation": {
-                                                                    "type": "number"
-                                                                  },
-                                                                  "clearcoat": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "clearcoatRoughness": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "color": {
-                                                                    "anyOf": [
-                                                                      {
-                                                                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                        "type": "string"
-                                                                      },
-                                                                      {
-                                                                        "enum": [
-                                                                          "$brand:colors.background",
-                                                                          "$brand:colors.surface",
-                                                                          "$brand:colors.text",
-                                                                          "$brand:colors.textMuted",
-                                                                          "$brand:colors.accent",
-                                                                          "$brand:colors.accentStrong",
-                                                                          "$brand:colors.accentSoft",
-                                                                          "$brand:colors.success",
-                                                                          "$brand:colors.warning",
-                                                                          "$brand:colors.danger"
-                                                                        ],
-                                                                        "type": "string"
-                                                                      }
-                                                                    ]
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-                                                                  "ior": {
-                                                                    "maximum": 2.333,
-                                                                    "minimum": 1,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "metalness": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "reflectivity": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "role": {
-                                                                    "maxLength": 64,
-                                                                    "minLength": 1,
-                                                                    "type": "string"
-                                                                  },
-                                                                  "roughness": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "type": {
-                                                                    "enum": [
-                                                                      "physical",
-                                                                      "unlit"
-                                                                    ],
-                                                                    "type": "string"
-                                                                  }
-                                                                },
-                                                                "required": [
-                                                                  "role",
-                                                                  "type"
-                                                                ],
-                                                                "type": "object"
-                                                              },
-                                                              "maxItems": 16,
-                                                              "type": "array"
-                                                            },
-                                                            "opacity": {
-                                                              "default": 1,
-                                                              "maximum": 1,
-                                                              "minimum": 0,
-                                                              "type": "number"
-                                                            },
-                                                            "surfaces": {
-                                                              "additionalProperties": {
-                                                                "anyOf": [
-                                                                  {
-                                                                    "additionalProperties": false,
-                                                                    "properties": {
-                                                                      "assetSlot": {
-                                                                        "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                                        "maxLength": 64,
-                                                                        "minLength": 1,
-                                                                        "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                                        "type": "string"
-                                                                      },
-                                                                      "source": {
-                                                                        "const": "image",
-                                                                        "type": "string"
-                                                                      }
-                                                                    },
-                                                                    "required": [
-                                                                      "source",
-                                                                      "assetSlot"
-                                                                    ],
-                                                                    "type": "object"
-                                                                  },
-                                                                  {
-                                                                    "additionalProperties": false,
-                                                                    "properties": {
-                                                                      "color": {
-                                                                        "anyOf": [
-                                                                          {
-                                                                            "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                            "type": "string"
-                                                                          },
-                                                                          {
-                                                                            "enum": [
-                                                                              "$brand:colors.background",
-                                                                              "$brand:colors.surface",
-                                                                              "$brand:colors.text",
-                                                                              "$brand:colors.textMuted",
-                                                                              "$brand:colors.accent",
-                                                                              "$brand:colors.accentStrong",
-                                                                              "$brand:colors.accentSoft",
-                                                                              "$brand:colors.success",
-                                                                              "$brand:colors.warning",
-                                                                              "$brand:colors.danger"
-                                                                            ],
-                                                                            "type": "string"
-                                                                          }
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-                                                                      "source": {
-                                                                        "const": "color",
-                                                                        "type": "string"
-                                                                      }
-                                                                    },
-                                                                    "required": [
-                                                                      "source",
-                                                                      "color"
-                                                                    ],
-                                                                    "type": "object"
-                                                                  },
-                                                                  {
-                                                                    "additionalProperties": false,
-                                                                    "properties": {
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-                                                                          {
-                                                                            "const": 2,
-                                                                            "type": "number"
-                                                                          },
-                                                                          {
-                                                                            "const": 3,
-                                                                            "type": "number"
-                                                                          }
-                                                                        ],
-                                                                        "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
-                                                                      },
-                                                                      "captureFrame": {
-                                                                        "maximum": 9007199254740991,
-                                                                        "minimum": 0,
-                                                                        "type": "integer"
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-                                                                      "component": {
-                                                                        "additionalProperties": false,
-                                                                        "properties": {
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-                                                                            "minLength": 1,
-                                                                            "type": "string"
-                                                                          },
-                                                                          "sourceVersionId": {
-                                                                            "pattern": "^[a-f0-9]{64}$",
-                                                                            "type": "string"
-                                                                          },
-                                                                          "version": {
-                                                                            "const": 1,
-                                                                            "type": "number"
-                                                                          }
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-                                                                        "required": [
-                                                                          "version",
-                                                                          "componentId",
-                                                                          "sourceVersionId"
-                                                                        ],
-                                                                        "type": "object"
-                                                                      },
-                                                                      "layout": {
-                                                                        "additionalProperties": false,
-                                                                        "properties": {
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-                                                                            "maximum": 9007199254740991,
-                                                                            "type": "integer"
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-                                                                            "maximum": 9007199254740991,
-                                                                            "type": "integer"
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-                                                                        "required": [
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-                                                                          "height"
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-                                                                        "type": "object"
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-                                                                      "params": {
-                                                                        "additionalProperties": {
-                                                                          "$ref": "#/$defs/__schema0"
-                                                                        },
-                                                                        "propertyNames": {
-                                                                          "type": "string"
-                                                                        },
-                                                                        "type": "object"
-                                                                      },
-                                                                      "source": {
-                                                                        "const": "component",
-                                                                        "type": "string"
-                                                                      }
-                                                                    },
-                                                                    "required": [
-                                                                      "source",
-                                                                      "component",
-                                                                      "captureFrame",
-                                                                      "layout"
-                                                                    ],
-                                                                    "type": "object"
-                                                                  },
-                                                                  {
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-                                                                        "maximum": 9007199254740991,
-                                                                        "type": "integer"
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-                                                                      "mediaId": {
-                                                                        "maxLength": 256,
-                                                                        "minLength": 1,
-                                                                        "type": "string"
-                                                                      },
-                                                                      "source": {
-                                                                        "const": "video",
-                                                                        "type": "string"
-                                                                      },
-                                                                      "startFrame": {
-                                                                        "default": 0,
-                                                                        "maximum": 9007199254740991,
-                                                                        "minimum": 0,
-                                                                        "type": "integer"
-                                                                      }
-                                                                    },
-                                                                    "required": [
-                                                                      "source",
-                                                                      "mediaId"
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-                                                                    "type": "object"
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-                                                              "propertyNames": {
-                                                                "type": "string"
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-                                                              "type": "object"
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-                                                              "default": {
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-                                                                  0,
-                                                                  0
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-                                                                  0,
-                                                                  0
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-                                                                  "default": [
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-                                                                    0,
-                                                                    0
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-                                                                  "items": false,
-                                                                  "maxItems": 3,
-                                                                  "minItems": 3,
-                                                                  "prefixItems": [
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-                                                                      "type": "number"
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-                                                                    {
-                                                                      "type": "number"
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-                                                                    {
-                                                                      "type": "number"
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-                                                                  "type": "array"
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-                                                                "rotation": {
-                                                                  "default": [
-                                                                    0,
-                                                                    0,
-                                                                    0
-                                                                  ],
-                                                                  "items": false,
-                                                                  "maxItems": 3,
-                                                                  "minItems": 3,
-                                                                  "prefixItems": [
-                                                                    {
-                                                                      "type": "number"
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-                                                                    {
-                                                                      "type": "number"
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-                                                                    {
-                                                                      "type": "number"
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-                                                                  "type": "array"
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-                                                                  "default": 1,
-                                                                  "exclusiveMinimum": 0,
-                                                                  "type": "number"
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-                                                              },
-                                                              "type": "object"
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-                                                            "width": {
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-                                                              "minimum": 80,
-                                                              "type": "number"
-                                                            }
-                                                          },
-                                                          "required": [
-                                                            "kind",
-                                                            "id",
-                                                            "width"
-                                                          ],
-                                                          "type": "object"
-                                                        },
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
-                                                            "cornerRadius": {
-                                                              "default": 32,
-                                                              "minimum": 0,
-                                                              "type": "number"
-                                                            },
-                                                            "edgeRadius": {
-                                                              "default": 15,
-                                                              "minimum": 0,
-                                                              "type": "number"
-                                                            },
-                                                            "finish": {
-                                                              "default": "satin",
-                                                              "enum": [
-                                                                "satin",
-                                                                "brushed"
-                                                              ],
-                                                              "type": "string"
-                                                            },
-                                                            "height": {
-                                                              "maximum": 8000,
-                                                              "minimum": 40,
-                                                              "type": "number"
-                                                            },
-                                                            "id": {
-                                                              "maxLength": 64,
-                                                              "minLength": 1,
-                                                              "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                                              "type": "string"
-                                                            },
-                                                            "kind": {
-                                                              "const": "slab",
-                                                              "type": "string"
-                                                            },
-                                                            "materials": {
-                                                              "items": {
-                                                                "additionalProperties": false,
-                                                                "properties": {
-                                                                  "anisotropy": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "anisotropyRotation": {
-                                                                    "type": "number"
-                                                                  },
-                                                                  "clearcoat": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "clearcoatRoughness": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "color": {
-                                                                    "anyOf": [
-                                                                      {
-                                                                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                        "type": "string"
-                                                                      },
-                                                                      {
-                                                                        "enum": [
-                                                                          "$brand:colors.background",
-                                                                          "$brand:colors.surface",
-                                                                          "$brand:colors.text",
-                                                                          "$brand:colors.textMuted",
-                                                                          "$brand:colors.accent",
-                                                                          "$brand:colors.accentStrong",
-                                                                          "$brand:colors.accentSoft",
-                                                                          "$brand:colors.success",
-                                                                          "$brand:colors.warning",
-                                                                          "$brand:colors.danger"
-                                                                        ],
-                                                                        "type": "string"
-                                                                      }
-                                                                    ]
-                                                                  },
-                                                                  "ior": {
-                                                                    "maximum": 2.333,
-                                                                    "minimum": 1,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "metalness": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "reflectivity": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "role": {
-                                                                    "maxLength": 64,
-                                                                    "minLength": 1,
-                                                                    "type": "string"
-                                                                  },
-                                                                  "roughness": {
-                                                                    "maximum": 1,
-                                                                    "minimum": 0,
-                                                                    "type": "number"
-                                                                  },
-                                                                  "type": {
-                                                                    "enum": [
-                                                                      "physical",
-                                                                      "unlit"
-                                                                    ],
-                                                                    "type": "string"
-                                                                  }
-                                                                },
-                                                                "required": [
-                                                                  "role",
-                                                                  "type"
-                                                                ],
-                                                                "type": "object"
-                                                              },
-                                                              "maxItems": 16,
-                                                              "type": "array"
-                                                            },
-                                                            "opacity": {
-                                                              "default": 1,
-                                                              "maximum": 1,
-                                                              "minimum": 0,
-                                                              "type": "number"
-                                                            },
-                                                            "surfaces": {
-                                                              "additionalProperties": {
-                                                                "anyOf": [
-                                                                  {
-                                                                    "additionalProperties": false,
-                                                                    "properties": {
-                                                                      "assetSlot": {
-                                                                        "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                                        "maxLength": 64,
-                                                                        "minLength": 1,
-                                                                        "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                                        "type": "string"
-                                                                      },
-                                                                      "source": {
-                                                                        "const": "image",
-                                                                        "type": "string"
-                                                                      }
-                                                                    },
-                                                                    "required": [
-                                                                      "source",
-                                                                      "assetSlot"
-                                                                    ],
-                                                                    "type": "object"
-                                                                  },
-                                                                  {
-                                                                    "additionalProperties": false,
-                                                                    "properties": {
-                                                                      "color": {
-                                                                        "anyOf": [
-                                                                          {
-                                                                            "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                            "type": "string"
-                                                                          },
-                                                                          {
-                                                                            "enum": [
-                                                                              "$brand:colors.background",
-                                                                              "$brand:colors.surface",
-                                                                              "$brand:colors.text",
-                                                                              "$brand:colors.textMuted",
-                                                                              "$brand:colors.accent",
-                                                                              "$brand:colors.accentStrong",
-                                                                              "$brand:colors.accentSoft",
-                                                                              "$brand:colors.success",
-                                                                              "$brand:colors.warning",
-                                                                              "$brand:colors.danger"
-                                                                            ],
-                                                                            "type": "string"
-                                                                          }
-                                                                        ]
-                                                                      },
-                                                                      "source": {
-                                                                        "const": "color",
-                                                                        "type": "string"
-                                                                      }
-                                                                    },
-                                                                    "required": [
-                                                                      "source",
-                                                                      "color"
-                                                                    ],
-                                                                    "type": "object"
-                                                                  },
-                                                                  {
-                                                                    "additionalProperties": false,
-                                                                    "properties": {
-                                                                      "bakeScale": {
-                                                                        "anyOf": [
-                                                                          {
-                                                                            "const": 2,
-                                                                            "type": "number"
-                                                                          },
-                                                                          {
-                                                                            "const": 3,
-                                                                            "type": "number"
-                                                                          }
-                                                                        ],
-                                                                        "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
-                                                                      },
-                                                                      "captureFrame": {
-                                                                        "maximum": 9007199254740991,
-                                                                        "minimum": 0,
-                                                                        "type": "integer"
-                                                                      },
-                                                                      "component": {
-                                                                        "additionalProperties": false,
-                                                                        "properties": {
-                                                                          "componentId": {
-                                                                            "maxLength": 256,
-                                                                            "minLength": 1,
-                                                                            "type": "string"
-                                                                          },
-                                                                          "sourceVersionId": {
-                                                                            "pattern": "^[a-f0-9]{64}$",
-                                                                            "type": "string"
-                                                                          },
-                                                                          "version": {
-                                                                            "const": 1,
-                                                                            "type": "number"
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-                                                                                "$brand:colors.textMuted",
-                                                                                "$brand:colors.accent",
-                                                                                "$brand:colors.accentStrong",
-                                                                                "$brand:colors.accentSoft",
-                                                                                "$brand:colors.success",
-                                                                                "$brand:colors.warning",
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-                                                          "maximum": 2.333,
-                                                          "minimum": 1,
-                                                          "type": "number"
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-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                        "reflectivity": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                        "role": {
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-                                                          "minLength": 1,
-                                                          "type": "string"
-                                                        },
-                                                        "roughness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                        "type": {
-                                                          "enum": [
-                                                            "physical",
-                                                            "unlit"
-                                                          ],
-                                                          "type": "string"
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-                                                      },
-                                                      "required": [
-                                                        "role",
-                                                        "type"
-                                                      ],
-                                                      "type": "object"
-                                                    },
-                                                    "maxItems": 16,
-                                                    "type": "array"
-                                                  },
-                                                  "opacity": {
-                                                    "default": 1,
-                                                    "maximum": 1,
-                                                    "minimum": 0,
-                                                    "type": "number"
-                                                  },
-                                                  "surfaces": {
-                                                    "additionalProperties": {
-                                                      "anyOf": [
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
-                                                            "assetSlot": {
-                                                              "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                              "maxLength": 64,
-                                                              "minLength": 1,
-                                                              "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                              "type": "string"
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-                                                            "source": {
-                                                              "const": "image",
-                                                              "type": "string"
-                                                            }
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-                                                          "required": [
-                                                            "source",
-                                                            "assetSlot"
-                                                          ],
-                                                          "type": "object"
-                                                        },
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
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-                                                                {
-                                                                  "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                                  "type": "string"
-                                                                },
-                                                                {
-                                                                  "enum": [
-                                                                    "$brand:colors.background",
-                                                                    "$brand:colors.surface",
-                                                                    "$brand:colors.text",
-                                                                    "$brand:colors.textMuted",
-                                                                    "$brand:colors.accent",
-                                                                    "$brand:colors.accentStrong",
-                                                                    "$brand:colors.accentSoft",
-                                                                    "$brand:colors.success",
-                                                                    "$brand:colors.warning",
-                                                                    "$brand:colors.danger"
-                                                                  ],
-                                                                  "type": "string"
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-                                                              "const": "color",
-                                                              "type": "string"
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-                                                            "color"
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-                                                                  "const": 2,
-                                                                  "type": "number"
-                                                                },
-                                                                {
-                                                                  "const": 3,
-                                                                  "type": "number"
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-                                                              "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
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-                                                              "minimum": 0,
-                                                              "type": "integer"
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-                                                                  "const": 1,
-                                                                  "type": "number"
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-                                                                "componentId",
-                                                                "sourceVersionId"
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-                                                              "type": "object"
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-                                                                  "maximum": 9007199254740991,
-                                                                  "type": "integer"
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-                                                                  "maximum": 9007199254740991,
-                                                                  "type": "integer"
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-                                                                "type": "string"
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-                                                            "source": {
-                                                              "const": "component",
-                                                              "type": "string"
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-                                                          "required": [
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-                                                            "component",
-                                                            "captureFrame",
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-                                                          "type": "object"
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-                                                              "type": "integer"
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-                                                              "type": "string"
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-                                                            "source": {
-                                                              "const": "video",
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-                                                              "maximum": 9007199254740991,
-                                                              "minimum": 0,
-                                                              "type": "integer"
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-                                                        "prefixItems": [
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-                                                          0,
-                                                          0
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-                                                        "maxItems": 3,
-                                                        "minItems": 3,
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-                                                    "type": "number"
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-                                                    "type": "number"
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-                                                    "maximum": 8000,
-                                                    "minimum": 40,
-                                                    "type": "number"
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-                                                  "id": {
-                                                    "maxLength": 64,
-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                                    "type": "string"
-                                                  },
-                                                  "kind": {
-                                                    "const": "slab",
-                                                    "type": "string"
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-                                                  "materials": {
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-                                                      "properties": {
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-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                          "type": "number"
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-                                                        "clearcoat": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "clearcoatRoughness": {
-                                                          "maximum": 1,
-                                                          "minimum": 0,
-                                                          "type": "number"
-                                                        },
-                                                        "color": {
-                                                          "anyOf": [
-                                                            {
-                                                              "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                              "type": "string"
-                                                            },
-                                                            {
-                                                              "enum": [
-                                                                "$brand:colors.background",
-                                                                "$brand:colors.surface",
-                                                                "$brand:colors.text",
-                                                                "$brand:colors.textMuted",
-                                                                "$brand:colors.accent",
-                                                                "$brand:colors.accentStrong",
-                                                                "$brand:colors.accentSoft",
-                                                                "$brand:colors.success",
-                                                                "$brand:colors.warning",
-                                                                "$brand:colors.danger"
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-                                                              "type": "string"
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-                                                          "type": "number"
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-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                          "minLength": 1,
-                                                          "type": "string"
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-                                                        "roughness": {
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-                                                          "minimum": 0,
-                                                          "type": "number"
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-                                                        "type": {
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-                                                            "unlit"
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-                                                          "type": "string"
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-                                                      "required": [
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-                                                        "type"
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-                                                      "type": "object"
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-                                                    "maxItems": 16,
-                                                    "type": "array"
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-                                                  "opacity": {
-                                                    "default": 1,
-                                                    "maximum": 1,
-                                                    "minimum": 0,
-                                                    "type": "number"
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-                                                  "surfaces": {
-                                                    "additionalProperties": {
-                                                      "anyOf": [
-                                                        {
-                                                          "additionalProperties": false,
-                                                          "properties": {
-                                                            "assetSlot": {
-                                                              "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                              "maxLength": 64,
-                                                              "minLength": 1,
-                                                              "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                              "type": "string"
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-                                                            "source": {
-                                                              "const": "image",
-                                                              "type": "string"
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-                                                          "required": [
-                                                            "source",
-                                                            "assetSlot"
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-                                                          "type": "object"
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-                                                          "additionalProperties": false,
-                                                          "properties": {
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-                                                              "anyOf": [
-                                                                {
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-                                                                  "type": "string"
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-                                                                {
-                                                                  "enum": [
-                                                                    "$brand:colors.background",
-                                                                    "$brand:colors.surface",
-                                                                    "$brand:colors.text",
-                                                                    "$brand:colors.textMuted",
-                                                                    "$brand:colors.accent",
-                                                                    "$brand:colors.accentStrong",
-                                                                    "$brand:colors.accentSoft",
-                                                                    "$brand:colors.success",
-                                                                    "$brand:colors.warning",
-                                                                    "$brand:colors.danger"
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-                                                                  "type": "string"
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-                                                            "source": {
-                                                              "const": "color",
-                                                              "type": "string"
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-                                                            "color"
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-                                                          "type": "object"
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-                                                          "properties": {
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-                                                                  "const": 2,
-                                                                  "type": "number"
-                                                                },
-                                                                {
-                                                                  "const": 3,
-                                                                  "type": "number"
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-                                                              "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
-                                                            },
-                                                            "captureFrame": {
-                                                              "maximum": 9007199254740991,
-                                                              "minimum": 0,
-                                                              "type": "integer"
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-                                                                  "const": 1,
-                                                                  "type": "number"
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-                                                                "componentId",
-                                                                "sourceVersionId"
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-                                                                  "type": "integer"
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-                                                              "type": "object"
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-                                                            "source": {
-                                                              "const": "component",
-                                                              "type": "string"
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-                                                          "required": [
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-                                                            "component",
-                                                            "captureFrame",
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-                                                          "type": "object"
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-                                                              "type": "string"
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-                                                            "source": {
-                                                              "const": "video",
-                                                              "type": "string"
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-                                              {
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-                                                      "visible"
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-                                                    "type": "string"
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-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                                    "type": "string"
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-                                                    "const": "page",
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-                                                          "type": "number"
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-                                                                "$brand:colors.background",
-                                                                "$brand:colors.surface",
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-                                          "maxItems": 16,
-                                          "minItems": 1,
-                                          "type": "array"
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-                                          "minLength": 1,
-                                          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                          "type": "string"
-                                        },
-                                        "kind": {
-                                          "const": "group",
-                                          "type": "string"
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-                                          "default": 1,
-                                          "maximum": 1,
-                                          "minimum": 0,
-                                          "type": "number"
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-                                              0,
-                                              0
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-                                              0,
-                                              0
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-                                            "scale": 1
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-                                                0,
-                                                0
-                                              ],
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-                                              "maxItems": 3,
-                                              "minItems": 3,
-                                              "prefixItems": [
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-                                                  "type": "number"
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-                                                {
-                                                  "type": "number"
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-                                                {
-                                                  "type": "number"
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-                                              "type": "array"
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-                                              "default": [
-                                                0,
-                                                0,
-                                                0
-                                              ],
-                                              "items": false,
-                                              "maxItems": 3,
-                                              "minItems": 3,
-                                              "prefixItems": [
-                                                {
-                                                  "type": "number"
-                                                },
-                                                {
-                                                  "type": "number"
-                                                },
-                                                {
-                                                  "type": "number"
-                                                }
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-                                              "type": "array"
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-                                            "scale": {
-                                              "default": 1,
-                                              "exclusiveMinimum": 0,
-                                              "type": "number"
-                                            }
-                                          },
-                                          "type": "object"
-                                        }
-                                      },
-                                      "required": [
-                                        "kind",
-                                        "id",
-                                        "children"
-                                      ],
-                                      "type": "object"
-                                    },
-                                    {
-                                      "additionalProperties": false,
-                                      "properties": {
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-                                          "maxLength": 64,
-                                          "minLength": 1,
-                                          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                          "type": "string"
-                                        },
-                                        "kind": {
-                                          "const": "laptop",
-                                          "type": "string"
-                                        },
-                                        "materials": {
-                                          "items": {
-                                            "additionalProperties": false,
-                                            "properties": {
-                                              "anisotropy": {
-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
-                                              },
-                                              "anisotropyRotation": {
-                                                "type": "number"
-                                              },
-                                              "clearcoat": {
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-                                                "minimum": 0,
-                                                "type": "number"
-                                              },
-                                              "clearcoatRoughness": {
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-                                                "minimum": 0,
-                                                "type": "number"
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-                                                    "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                    "type": "string"
-                                                  },
-                                                  {
-                                                    "enum": [
-                                                      "$brand:colors.background",
-                                                      "$brand:colors.surface",
-                                                      "$brand:colors.text",
-                                                      "$brand:colors.textMuted",
-                                                      "$brand:colors.accent",
-                                                      "$brand:colors.accentStrong",
-                                                      "$brand:colors.accentSoft",
-                                                      "$brand:colors.success",
-                                                      "$brand:colors.warning",
-                                                      "$brand:colors.danger"
-                                                    ],
-                                                    "type": "string"
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-                                                "type": "number"
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-                                                "type": "number"
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-                                                "minLength": 1,
-                                                "type": "string"
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-                                                "minimum": 0,
-                                                "type": "number"
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-                                              "type": {
-                                                "enum": [
-                                                  "physical",
-                                                  "unlit"
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-                                                "type": "string"
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-                                              "role",
-                                              "type"
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-                                          "type": "array"
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-                                        "opacity": {
-                                          "default": 1,
-                                          "maximum": 1,
-                                          "minimum": 0,
-                                          "type": "number"
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-                                        "openAngle": {
-                                          "maximum": 3.141592653589793,
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-                                          "type": "number"
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-                                        "surfaces": {
-                                          "additionalProperties": {
-                                            "anyOf": [
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-                                                "additionalProperties": false,
-                                                "properties": {
-                                                  "assetSlot": {
-                                                    "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                    "maxLength": 64,
-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                    "type": "string"
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-                                                  "source": {
-                                                    "const": "image",
-                                                    "type": "string"
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-                                                  "source",
-                                                  "assetSlot"
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-                                                "properties": {
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-                                                        "type": "string"
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-                                                      {
-                                                        "enum": [
-                                                          "$brand:colors.background",
-                                                          "$brand:colors.surface",
-                                                          "$brand:colors.text",
-                                                          "$brand:colors.textMuted",
-                                                          "$brand:colors.accent",
-                                                          "$brand:colors.accentStrong",
-                                                          "$brand:colors.accentSoft",
-                                                          "$brand:colors.success",
-                                                          "$brand:colors.warning",
-                                                          "$brand:colors.danger"
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-                                                        "type": "string"
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-                                                  "source": {
-                                                    "const": "color",
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-                                                        "const": 2,
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-                                                      {
-                                                        "const": 3,
-                                                        "type": "number"
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-                                                    "type": "integer"
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-                                                    "const": "component",
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-                                                  "component",
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-                                                    "const": "video",
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-                                                    "type": "integer"
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-                                                0
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-                                      "type": "object"
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-                                    {
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-                                          "minLength": 1,
-                                          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                          "type": "string"
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-                                          "const": "phone",
-                                          "type": "string"
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-                                                "type": "number"
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-                                                "type": "number"
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-                                              "clearcoat": {
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-                                                "type": "number"
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-                                                "minimum": 0,
-                                                "type": "number"
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-                                                    "type": "string"
-                                                  },
-                                                  {
-                                                    "enum": [
-                                                      "$brand:colors.background",
-                                                      "$brand:colors.surface",
-                                                      "$brand:colors.text",
-                                                      "$brand:colors.textMuted",
-                                                      "$brand:colors.accent",
-                                                      "$brand:colors.accentStrong",
-                                                      "$brand:colors.accentSoft",
-                                                      "$brand:colors.success",
-                                                      "$brand:colors.warning",
-                                                      "$brand:colors.danger"
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-                                                    "type": "string"
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-                                                "type": "number"
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-                                                "type": "number"
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-                                                "minimum": 0,
-                                                "type": "number"
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-                                              "role": {
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-                                                "minLength": 1,
-                                                "type": "string"
-                                              },
-                                              "roughness": {
-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
-                                              },
-                                              "type": {
-                                                "enum": [
-                                                  "physical",
-                                                  "unlit"
-                                                ],
-                                                "type": "string"
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-                                            "required": [
-                                              "role",
-                                              "type"
-                                            ],
-                                            "type": "object"
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-                                          "maxItems": 16,
-                                          "type": "array"
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-                                        "opacity": {
-                                          "default": 1,
-                                          "maximum": 1,
-                                          "minimum": 0,
-                                          "type": "number"
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-                                        "surfaces": {
-                                          "additionalProperties": {
-                                            "anyOf": [
-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
-                                                  "assetSlot": {
-                                                    "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                    "maxLength": 64,
-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                    "type": "string"
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-                                                  "source": {
-                                                    "const": "image",
-                                                    "type": "string"
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-                                                "required": [
-                                                  "source",
-                                                  "assetSlot"
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-                                                "type": "object"
-                                              },
-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
-                                                  "color": {
-                                                    "anyOf": [
-                                                      {
-                                                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                        "type": "string"
-                                                      },
-                                                      {
-                                                        "enum": [
-                                                          "$brand:colors.background",
-                                                          "$brand:colors.surface",
-                                                          "$brand:colors.text",
-                                                          "$brand:colors.textMuted",
-                                                          "$brand:colors.accent",
-                                                          "$brand:colors.accentStrong",
-                                                          "$brand:colors.accentSoft",
-                                                          "$brand:colors.success",
-                                                          "$brand:colors.warning",
-                                                          "$brand:colors.danger"
-                                                        ],
-                                                        "type": "string"
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-                                                  "source": {
-                                                    "const": "color",
-                                                    "type": "string"
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-                                                "required": [
-                                                  "source",
-                                                  "color"
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-                                                "type": "object"
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-                                              {
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-                                                "properties": {
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-                                                        "const": 2,
-                                                        "type": "number"
-                                                      },
-                                                      {
-                                                        "const": 3,
-                                                        "type": "number"
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-                                                    "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
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-                                                    "minimum": 0,
-                                                    "type": "integer"
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-                                                        "minLength": 1,
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-                                                      "componentId",
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-                                                    "type": "object"
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-                                                        "type": "integer"
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-                                                        "maximum": 9007199254740991,
-                                                        "type": "integer"
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-                                                      "height"
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-                                                    "type": "object"
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-                                                  "params": {
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-                                                    "propertyNames": {
-                                                      "type": "string"
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-                                                    "type": "object"
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-                                                  "source": {
-                                                    "const": "component",
-                                                    "type": "string"
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-                                                "required": [
-                                                  "source",
-                                                  "component",
-                                                  "captureFrame",
-                                                  "layout"
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-                                                "type": "object"
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-                                                    "type": "integer"
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-                                                    "minLength": 1,
-                                                    "type": "string"
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-                                                  "source": {
-                                                    "const": "video",
-                                                    "type": "string"
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-                                                    "type": "integer"
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-                                              0
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-                                                0,
-                                                0
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-                                                0
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-                                          "minimum": 80,
-                                          "type": "number"
-                                        }
-                                      },
-                                      "required": [
-                                        "kind",
-                                        "id",
-                                        "width"
-                                      ],
-                                      "type": "object"
-                                    },
-                                    {
-                                      "additionalProperties": false,
-                                      "properties": {
-                                        "cornerRadius": {
-                                          "default": 32,
-                                          "minimum": 0,
-                                          "type": "number"
-                                        },
-                                        "edgeRadius": {
-                                          "default": 15,
-                                          "minimum": 0,
-                                          "type": "number"
-                                        },
-                                        "finish": {
-                                          "default": "satin",
-                                          "enum": [
-                                            "satin",
-                                            "brushed"
-                                          ],
-                                          "type": "string"
-                                        },
-                                        "height": {
-                                          "maximum": 8000,
-                                          "minimum": 40,
-                                          "type": "number"
-                                        },
-                                        "id": {
-                                          "maxLength": 64,
-                                          "minLength": 1,
-                                          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                          "type": "string"
-                                        },
-                                        "kind": {
-                                          "const": "slab",
-                                          "type": "string"
-                                        },
-                                        "materials": {
-                                          "items": {
-                                            "additionalProperties": false,
-                                            "properties": {
-                                              "anisotropy": {
-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
-                                              },
-                                              "anisotropyRotation": {
-                                                "type": "number"
-                                              },
-                                              "clearcoat": {
-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
-                                              },
-                                              "clearcoatRoughness": {
-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
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-                                              "color": {
-                                                "anyOf": [
-                                                  {
-                                                    "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                    "type": "string"
-                                                  },
-                                                  {
-                                                    "enum": [
-                                                      "$brand:colors.background",
-                                                      "$brand:colors.surface",
-                                                      "$brand:colors.text",
-                                                      "$brand:colors.textMuted",
-                                                      "$brand:colors.accent",
-                                                      "$brand:colors.accentStrong",
-                                                      "$brand:colors.accentSoft",
-                                                      "$brand:colors.success",
-                                                      "$brand:colors.warning",
-                                                      "$brand:colors.danger"
-                                                    ],
-                                                    "type": "string"
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-                                                "minimum": 1,
-                                                "type": "number"
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-                                                "minimum": 0,
-                                                "type": "number"
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-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
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-                                                "maxLength": 64,
-                                                "minLength": 1,
-                                                "type": "string"
-                                              },
-                                              "roughness": {
-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
-                                              },
-                                              "type": {
-                                                "enum": [
-                                                  "physical",
-                                                  "unlit"
-                                                ],
-                                                "type": "string"
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-                                            "required": [
-                                              "role",
-                                              "type"
-                                            ],
-                                            "type": "object"
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-                                          "maxItems": 16,
-                                          "type": "array"
-                                        },
-                                        "opacity": {
-                                          "default": 1,
-                                          "maximum": 1,
-                                          "minimum": 0,
-                                          "type": "number"
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-                                        "surfaces": {
-                                          "additionalProperties": {
-                                            "anyOf": [
-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
-                                                  "assetSlot": {
-                                                    "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                    "maxLength": 64,
-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                    "type": "string"
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-                                                  "source": {
-                                                    "const": "image",
-                                                    "type": "string"
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-                                                  "source",
-                                                  "assetSlot"
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-                                                "type": "object"
-                                              },
-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
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-                                                    "anyOf": [
-                                                      {
-                                                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                        "type": "string"
-                                                      },
-                                                      {
-                                                        "enum": [
-                                                          "$brand:colors.background",
-                                                          "$brand:colors.surface",
-                                                          "$brand:colors.text",
-                                                          "$brand:colors.textMuted",
-                                                          "$brand:colors.accent",
-                                                          "$brand:colors.accentStrong",
-                                                          "$brand:colors.accentSoft",
-                                                          "$brand:colors.success",
-                                                          "$brand:colors.warning",
-                                                          "$brand:colors.danger"
-                                                        ],
-                                                        "type": "string"
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-                                                  "source": {
-                                                    "const": "color",
-                                                    "type": "string"
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-                                                "required": [
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-                                                  "color"
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-                                                "type": "object"
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-                                                "properties": {
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-                                                        "const": 2,
-                                                        "type": "number"
-                                                      },
-                                                      {
-                                                        "const": 3,
-                                                        "type": "number"
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-                                                    "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
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-                                                  "captureFrame": {
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-                                                    "minimum": 0,
-                                                    "type": "integer"
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-                                                        "const": 1,
-                                                        "type": "number"
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-                                                      "componentId",
-                                                      "sourceVersionId"
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-                                                    "type": "object"
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-                                                        "maximum": 9007199254740991,
-                                                        "type": "integer"
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-                                                        "maximum": 9007199254740991,
-                                                        "type": "integer"
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-                                                    "type": "object"
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-                                                  "params": {
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-                                                    "propertyNames": {
-                                                      "type": "string"
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-                                                    "type": "object"
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-                                                  "source": {
-                                                    "const": "component",
-                                                    "type": "string"
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-                                                "required": [
-                                                  "source",
-                                                  "component",
-                                                  "captureFrame",
-                                                  "layout"
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-                                                "type": "object"
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-                                                    "maximum": 9007199254740991,
-                                                    "type": "integer"
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-                                                  "source": {
-                                                    "const": "video",
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-                                                    "type": "integer"
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-                                            "type": "string"
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-                                          "type": "object"
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-                                              0
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-                                              0
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-                                                0,
-                                                0
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-                                              "maxItems": 3,
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-                                                0,
-                                                0
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-                                              "maxItems": 3,
-                                              "minItems": 3,
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-                                        "width",
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-                                      "type": "object"
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-                                      "properties": {
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-                                          "enum": [
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-                                          "type": "string"
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-                                          "default": true,
-                                          "type": "boolean"
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-                                          "enum": [
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-                                          "type": "string"
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-                                        "height": {
-                                          "maximum": 8000,
-                                          "minimum": 40,
-                                          "type": "number"
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-                                        "id": {
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-                                          "minLength": 1,
-                                          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                          "type": "string"
-                                        },
-                                        "kind": {
-                                          "const": "page",
-                                          "type": "string"
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-                                        "materials": {
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-                                            "additionalProperties": false,
-                                            "properties": {
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-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
-                                              },
-                                              "anisotropyRotation": {
-                                                "type": "number"
-                                              },
-                                              "clearcoat": {
-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
-                                              },
-                                              "clearcoatRoughness": {
-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
-                                              },
-                                              "color": {
-                                                "anyOf": [
-                                                  {
-                                                    "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                    "type": "string"
-                                                  },
-                                                  {
-                                                    "enum": [
-                                                      "$brand:colors.background",
-                                                      "$brand:colors.surface",
-                                                      "$brand:colors.text",
-                                                      "$brand:colors.textMuted",
-                                                      "$brand:colors.accent",
-                                                      "$brand:colors.accentStrong",
-                                                      "$brand:colors.accentSoft",
-                                                      "$brand:colors.success",
-                                                      "$brand:colors.warning",
-                                                      "$brand:colors.danger"
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-                                                    "type": "string"
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-                                                "minimum": 1,
-                                                "type": "number"
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-                                                "type": "number"
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-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
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-                                                "maxLength": 64,
-                                                "minLength": 1,
-                                                "type": "string"
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-                                              "roughness": {
-                                                "maximum": 1,
-                                                "minimum": 0,
-                                                "type": "number"
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-                                              "type": {
-                                                "enum": [
-                                                  "physical",
-                                                  "unlit"
-                                                ],
-                                                "type": "string"
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-                                            "required": [
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-                                              "type"
-                                            ],
-                                            "type": "object"
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-                                          "maxItems": 16,
-                                          "type": "array"
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-                                        "opacity": {
-                                          "default": 1,
-                                          "maximum": 1,
-                                          "minimum": 0,
-                                          "type": "number"
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-                                        "surfaces": {
-                                          "additionalProperties": {
-                                            "anyOf": [
-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
-                                                  "assetSlot": {
-                                                    "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                                    "maxLength": 64,
-                                                    "minLength": 1,
-                                                    "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                                    "type": "string"
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-                                                  "source": {
-                                                    "const": "image",
-                                                    "type": "string"
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-                                                },
-                                                "required": [
-                                                  "source",
-                                                  "assetSlot"
-                                                ],
-                                                "type": "object"
-                                              },
-                                              {
-                                                "additionalProperties": false,
-                                                "properties": {
-                                                  "color": {
-                                                    "anyOf": [
-                                                      {
-                                                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                                        "type": "string"
-                                                      },
-                                                      {
-                                                        "enum": [
-                                                          "$brand:colors.background",
-                                                          "$brand:colors.surface",
-                                                          "$brand:colors.text",
-                                                          "$brand:colors.textMuted",
-                                                          "$brand:colors.accent",
-                                                          "$brand:colors.accentStrong",
-                                                          "$brand:colors.accentSoft",
-                                                          "$brand:colors.success",
-                                                          "$brand:colors.warning",
-                                                          "$brand:colors.danger"
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-                                                        "type": "string"
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-                                                  "source": {
-                                                    "const": "color",
-                                                    "type": "string"
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-                                                "required": [
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-                                                  "color"
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-                                                "type": "object"
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-                                              {
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-                                                "properties": {
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-                                                        "const": 2,
-                                                        "type": "number"
-                                                      },
-                                                      {
-                                                        "const": 3,
-                                                        "type": "number"
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-                                                    "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
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-                                                    "minimum": 0,
-                                                    "type": "integer"
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-                                                        "const": 1,
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-                                                      "componentId",
-                                                      "sourceVersionId"
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-                                                    "type": "object"
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-                                                  "source": {
-                                                    "const": "component",
-                                                    "type": "string"
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-                                                "required": [
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-                                                  "component",
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-                                                    "type": "string"
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-                                                    "const": "video",
-                                                    "type": "string"
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-                                                0
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-                                                0,
-                                                0
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-                                      0,
-                                      0
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-                                    "items": false,
-                                    "maxItems": 3,
-                                    "minItems": 3,
-                                    "prefixItems": [
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-                                        "type": "number"
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-                                      {
-                                        "type": "number"
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-                                      {
-                                        "type": "number"
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-                                    "type": "number"
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-                                "type": "object"
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-                                "maximum": 4000,
-                                "minimum": 200,
-                                "type": "number"
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-                              "kind",
-                              "id",
-                              "width",
-                              "openAngle"
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-                            "type": "object"
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-                          {
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-                            "properties": {
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-                                "minLength": 1,
-                                "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                "type": "string"
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-                              "kind": {
-                                "const": "phone",
-                                "type": "string"
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-                              "materials": {
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-                                  "properties": {
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-                                      "minimum": 0,
-                                      "type": "number"
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-                                      "type": "number"
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-                                      "type": "number"
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-                                          "type": "string"
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-                                          "enum": [
-                                            "$brand:colors.background",
-                                            "$brand:colors.surface",
-                                            "$brand:colors.text",
-                                            "$brand:colors.textMuted",
-                                            "$brand:colors.accent",
-                                            "$brand:colors.accentStrong",
-                                            "$brand:colors.accentSoft",
-                                            "$brand:colors.success",
-                                            "$brand:colors.warning",
-                                            "$brand:colors.danger"
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-                                      "type": "number"
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-                                "type": "number"
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-                                          "description": "Image asset slot name bound by the clip assets map; never a URL.",
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-                                                "$brand:colors.surface",
-                                                "$brand:colors.text",
-                                                "$brand:colors.textMuted",
-                                                "$brand:colors.accent",
-                                                "$brand:colors.accentStrong",
-                                                "$brand:colors.accentSoft",
-                                                "$brand:colors.success",
-                                                "$brand:colors.warning",
-                                                "$brand:colors.danger"
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-                                          "const": "color",
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-                                              "type": "number"
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-                                          "type": "integer"
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-                                          "const": "component",
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-                                "type": "number"
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-                                "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                                "type": "string"
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-                                "const": "slab",
-                                "type": "string"
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-                                      "type": "number"
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-                                      "type": "number"
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-                                          "type": "string"
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-                                        {
-                                          "enum": [
-                                            "$brand:colors.background",
-                                            "$brand:colors.surface",
-                                            "$brand:colors.text",
-                                            "$brand:colors.textMuted",
-                                            "$brand:colors.accent",
-                                            "$brand:colors.accentStrong",
-                                            "$brand:colors.accentSoft",
-                                            "$brand:colors.success",
-                                            "$brand:colors.warning",
-                                            "$brand:colors.danger"
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-                                          "type": "string"
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-                                      "minimum": 0,
-                                      "type": "number"
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-                                    "type"
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-                                  "type": "object"
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-                                "maxItems": 16,
-                                "type": "array"
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-                                "maximum": 1,
-                                "minimum": 0,
-                                "type": "number"
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-                                  "anyOf": [
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-                                      "additionalProperties": false,
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-                                          "description": "Image asset slot name bound by the clip assets map; never a URL.",
-                                          "maxLength": 64,
-                                          "minLength": 1,
-                                          "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
-                                          "type": "string"
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-                                          "const": "image",
-                                          "type": "string"
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-                                      "required": [
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-                                      "type": "object"
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-                                              "type": "string"
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-                                              "enum": [
-                                                "$brand:colors.background",
-                                                "$brand:colors.surface",
-                                                "$brand:colors.text",
-                                                "$brand:colors.textMuted",
-                                                "$brand:colors.accent",
-                                                "$brand:colors.accentStrong",
-                                                "$brand:colors.accentSoft",
-                                                "$brand:colors.success",
-                                                "$brand:colors.warning",
-                                                "$brand:colors.danger"
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-                                          "const": "color",
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-                                              "const": 3,
-                                              "type": "number"
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-                                          "description": "Optional authored scale. Preparation defaults omission to 2 and may auto-raise it to 3."
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-                                          "type": "integer"
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-                                  "$brand:colors.accentStrong",
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-                                  "$brand:colors.success",
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-                                "const": "component",
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-                                "type": "string"
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-                                  "$brand:colors.accentSoft",
-                                  "$brand:colors.success",
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-                                "minLength": 1,
-                                "pattern": "^[A-Za-z_][A-Za-z0-9_-]*$",
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-                                    "type": "string"
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-                                      "$brand:colors.text",
-                                      "$brand:colors.textMuted",
-                                      "$brand:colors.accent",
-                                      "$brand:colors.accentStrong",
-                                      "$brand:colors.accentSoft",
-                                      "$brand:colors.success",
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-                                      "$brand:colors.danger"
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-                                "const": "color",
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-                          0
-                        ],
-                        "rotation": [
-                          0,
-                          0,
-                          0
-                        ],
-                        "scale": 1
-                      },
-                      "properties": {
-                        "position": {
-                          "default": [
-                            0,
-                            0,
-                            0
-                          ],
-                          "items": false,
-                          "maxItems": 3,
-                          "minItems": 3,
-                          "prefixItems": [
-                            {
-                              "type": "number"
-                            },
-                            {
-                              "type": "number"
-                            },
-                            {
-                              "type": "number"
-                            }
-                          ],
-                          "type": "array"
-                        },
-                        "rotation": {
-                          "default": [
-                            0,
-                            0,
-                            0
-                          ],
-                          "items": false,
-                          "maxItems": 3,
-                          "minItems": 3,
-                          "prefixItems": [
-                            {
-                              "type": "number"
-                            },
-                            {
-                              "type": "number"
-                            },
-                            {
-                              "type": "number"
-                            }
-                          ],
-                          "type": "array"
-                        },
-                        "scale": {
-                          "default": 1,
-                          "exclusiveMinimum": 0,
-                          "type": "number"
-                        }
-                      },
-                      "type": "object"
-                    }
-                  },
-                  "required": [
-                    "id",
-                    "kind",
-                    "lines",
-                    "fontFamily",
-                    "fontWeight",
-                    "fontStyle",
-                    "fontSize",
-                    "color",
-                    "space"
-                  ],
-                  "type": "object"
-                },
-                {
-                  "additionalProperties": false,
-                  "properties": {
-                    "align": {
-                      "default": "center",
-                      "enum": [
-                        "left",
-                        "center",
-                        "right"
-                      ],
-                      "type": "string"
-                    },
-                    "color": {
-                      "anyOf": [
-                        {
-                          "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                          "type": "string"
-                        },
-                        {
-                          "enum": [
-                            "$brand:colors.background",
-                            "$brand:colors.surface",
-                            "$brand:colors.text",
-                            "$brand:colors.textMuted",
-                            "$brand:colors.accent",
-                            "$brand:colors.accentStrong",
-                            "$brand:colors.accentSoft",
-                            "$brand:colors.success",
-                            "$brand:colors.warning",
-                            "$brand:colors.danger"
-                          ],
-                          "type": "string"
-                        }
-                      ]
-                    },
-                    "fontFamily": {
-                      "anyOf": [
-                        {
-                          "maxLength": 128,
-                          "minLength": 1,
-                          "pattern": "^[A-Za-z0-9][A-Za-z0-9 _.\\-]*$",
-                          "type": "string"
-                        },
-                        {
-                          "enum": [
-                            "$brand:fonts.heading",
-                            "$brand:fonts.body",
-                            "$brand:fonts.caption"
-                          ],
-                          "type": "string"
-                        }
-                      ]
-                    },
-                    "fontSize": {
-                      "maximum": 800,
-                      "minimum": 8,
-                      "type": "number"
-                    },
-                    "fontStyle": {
-                      "enum": [
-                        "normal",
-                        "italic"
-                      ],
-                      "type": "string"
-                    },
-                    "fontWeight": {
-                      "maximum": 900,
-                      "minimum": 100,
-                      "type": "integer"
-                    },
-                    "id": {
-                      "maxLength": 64,
-                      "minLength": 1,
-                      "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
-                      "type": "string"
-                    },
-                    "kind": {
-                      "const": "text",
-                      "type": "string"
-                    },
-                    "letterSpacing": {
-                      "default": 0,
-                      "maximum": 40,
-                      "minimum": -20,
-                      "type": "number"
-                    },
-                    "lineHeight": {
-                      "default": 1.2,
-                      "maximum": 3,
-                      "minimum": 0.6,
-                      "type": "number"
-                    },
-                    "lines": {
-                      "items": {
-                        "additionalProperties": false,
-                        "properties": {
-                          "runs": {
-                            "items": {
-                              "additionalProperties": false,
-                              "properties": {
-                                "color": {
-                                  "anyOf": [
-                                    {
-                                      "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
-                                      "type": "string"
-                                    },
-                                    {
-                                      "enum": [
-                                        "$brand:colors.background",
-                                        "$brand:colors.surface",
-                                        "$brand:colors.text",
-                                        "$brand:colors.textMuted",
-                                        "$brand:colors.accent",
-                                        "$brand:colors.accentStrong",
-                                        "$brand:colors.accentSoft",
-                                        "$brand:colors.success",
-                                        "$brand:colors.warning",
-                                        "$brand:colors.danger"
-                                      ],
-                                      "type": "string"
-                                    }
-                                  ]
-                                },
-                                "emphasis": {
-                                  "type": "boolean"
-                                },
-                                "text": {
-                                  "maxLength": 512,
-                                  "minLength": 1,
-                                  "pattern": "^[^\\r\\n]+$",
-                                  "type": "string"
-                                }
-                              },
-                              "required": [
-                                "text"
-                              ],
-                              "type": "object"
-                            },
-                            "maxItems": 16,
-                            "minItems": 1,
-                            "type": "array"
-                          }
-                        },
-                        "required": [
-                          "runs"
-                        ],
-                        "type": "object"
-                      },
-                      "maxItems": 24,
-                      "minItems": 1,
-                      "type": "array"
-                    },
-                    "maxWidth": {
-                      "exclusiveMinimum": 0,
-                      "type": "number"
-                    },
-                    "opacity": {
-                      "default": 1,
-                      "maximum": 1,
-                      "minimum": 0,
-                      "type": "number"
-                    },
-                    "rotation": {
-                      "default": 0,
-                      "type": "number"
-                    },
-                    "scale": {
-                      "default": 1,
-                      "exclusiveMinimum": 0,
-                      "type": "number"
-                    },
-                    "space": {
-                      "const": "screen",
-                      "type": "string"
-                    },
-                    "x": {
-                      "type": "number"
-                    },
-                    "y": {
-                      "type": "number"
-                    }
-                  },
-                  "required": [
-                    "id",
-                    "kind",
-                    "lines",
-                    "fontFamily",
-                    "fontWeight",
-                    "fontStyle",
-                    "fontSize",
-                    "color",
-                    "space",
-                    "x",
-                    "y"
-                  ],
-                  "type": "object"
-                }
-              ]
-            },
-            "minItems": 1,
-            "type": "array"
-          },
-          "post": {
-            "additionalProperties": false,
-            "default": {
-              "focus": null,
-              "grain": 0,
-              "vignette": 0
-            },
-            "properties": {
-              "focus": {
-                "anyOf": [
-                  {
-                    "additionalProperties": false,
-                    "properties": {
-                      "distance": {
-                        "exclusiveMinimum": 0,
-                        "type": "number"
-                      },
-                      "maxBlur": {
-                        "maximum": 64,
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "range": {
-                        "exclusiveMinimum": 0,
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "distance",
-                      "range",
-                      "maxBlur"
-                    ],
-                    "type": "object"
-                  },
-                  {
-                    "type": "null"
-                  }
-                ],
-                "default": null
-              },
-              "grain": {
-                "default": 0,
-                "maximum": 0.5,
-                "minimum": 0,
-                "type": "number"
-              },
-              "vignette": {
-                "default": 0,
-                "maximum": 1,
-                "minimum": 0,
-                "type": "number"
-              }
-            },
-            "type": "object"
-          },
-          "referenceSize": {
-            "additionalProperties": false,
-            "properties": {
-              "height": {
-                "maximum": 8192,
-                "minimum": 16,
-                "type": "integer"
-              },
-              "width": {
-                "maximum": 8192,
-                "minimum": 16,
-                "type": "integer"
-              }
-            },
-            "required": [
-              "width",
-              "height"
-            ],
-            "type": "object"
-          },
-          "version": {
-            "const": 2,
-            "type": "number"
-          }
-        },
-        "required": [
-          "version",
-          "referenceSize",
-          "layers"
-        ],
-        "type": "object"
-      },
-      "startTime": {
-        "minimum": 0,
-        "type": "number"
-      },
-      "transitionIn": {
-        "additionalProperties": false,
-        "description": "Inter-scene transition.",
-        "properties": {
-          "duration": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "type": {
-            "enum": [
-              "cut",
-              "fade",
-              "dissolve",
-              "wipe"
-            ],
-            "type": "string"
-          }
-        },
-        "required": [
-          "type"
-        ],
-        "type": "object"
-      },
-      "type": {
-        "const": "scene.update",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Add a clip to the timeline. The clip self-routes to a track by FAMILY (`clip.kind`, else derived from `source.kind`, else the target track) — a `media` clip MUST carry `kind` (video|audio|image) or a `trackId`, else it is rejected as ambiguous. `trackId` targets an existing SAME-family track; `newTrack:true` (with optional pinned `newTrackId`) creates a fresh track of that family.",
-    "properties": {
-      "clip": {
-        "additionalProperties": false,
-        "properties": {
-          "animate": {
-            "additionalProperties": {
-              "items": {
-                "additionalProperties": false,
-                "properties": {
-                  "easing": {
-                    "anyOf": [
-                      {
-                        "enum": [
-                          "linear",
-                          "ease",
-                          "easeIn",
-                          "easeOut",
-                          "easeInOut"
-                        ],
-                        "type": "string"
-                      },
-                      {
-                        "additionalProperties": false,
-                        "properties": {
-                          "cubicBezier": {
-                            "items": false,
-                            "maxItems": 4,
-                            "minItems": 4,
-                            "prefixItems": [
-                              {
-                                "type": "number"
-                              },
-                              {
-                                "type": "number"
-                              },
-                              {
-                                "type": "number"
-                              },
-                              {
-                                "type": "number"
-                              }
-                            ],
-                            "type": "array"
-                          }
-                        },
-                        "required": [
-                          "cubicBezier"
-                        ],
-                        "type": "object"
-                      }
-                    ]
-                  },
-                  "time": {
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "value": {
-                    "type": "number"
-                  }
-                },
-                "required": [
-                  "time",
-                  "value"
-                ],
-                "type": "object"
-              },
-              "minItems": 2,
-              "type": "array"
-            },
-            "description": "Keyframe channels, clip-relative seconds. Each channel's values use the SAME unit as the scalar it animates: `opacity` 0 to 1, `scale` a multiplier (>0), `rotation` degrees, `position.x`/`position.y` a FRACTION of the frame like `position` (0.5 = centre; NOT pixels), `volume` 0 to 4.",
-            "propertyNames": {
-              "type": "string"
-            },
-            "type": "object"
-          },
-          "captionVisibility": {
-            "description": "Video media clip only. Hide native captions while this clip is topmost and covers the lower picture, or when an opaque, effect-free clip has an explicitly full-frame region, even with fit:contain. Caption words and timings remain stored and resume when another visible clip takes over.",
-            "enum": [
-              "visible",
-              "hidden"
-            ],
-            "type": "string"
-          },
-          "duration": {
-            "description": "Clip duration (seconds).",
-            "exclusiveMinimum": 0,
-            "type": "number"
-          },
-          "effects": {
-            "items": {
-              "additionalProperties": false,
-              "properties": {
-                "component": {
-                  "additionalProperties": false,
-                  "properties": {
-                    "assets": {
-                      "additionalProperties": {
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "componentId": {
-                      "maxLength": 256,
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "mediaBindings": {
-                      "additionalProperties": {
-                        "items": {
-                          "maxLength": 128,
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "type": "array"
-                      },
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "params": {
-                      "additionalProperties": {
-                        "$ref": "#/$defs/__schema1"
-                      },
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "seed": {
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "sourceVersionId": {
-                      "pattern": "^[a-f0-9]{64}$",
-                      "type": "string"
-                    },
-                    "version": {
-                      "const": 3,
-                      "type": "number"
-                    }
-                  },
-                  "required": [
-                    "version",
-                    "componentId",
-                    "sourceVersionId",
-                    "params",
-                    "seed"
-                  ],
-                  "type": "object"
-                },
-                "id": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "params": {
-                  "additionalProperties": {},
-                  "propertyNames": {
-                    "type": "string"
-                  },
-                  "type": "object"
-                },
-                "primitiveId": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "window": {
-                  "additionalProperties": false,
-                  "properties": {
-                    "duration": {
-                      "exclusiveMinimum": 0,
-                      "type": "number"
-                    },
-                    "startTime": {
-                      "minimum": 0,
-                      "type": "number"
-                    }
-                  },
-                  "required": [
-                    "startTime",
-                    "duration"
-                  ],
-                  "type": "object"
-                }
-              },
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "fit": {
-            "enum": [
-              "cover",
-              "contain"
-            ],
-            "type": "string"
-          },
-          "id": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "kind": {
-            "enum": [
-              "video",
-              "audio",
-              "image",
-              "overlay",
-              "effect"
-            ],
-            "type": "string"
-          },
-          "linkGroupId": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "opacity": {
-            "maximum": 1,
-            "minimum": 0,
-            "type": "number"
-          },
-          "position": {
-            "additionalProperties": false,
-            "description": "Clip CENTRE as a fraction of the frame: {x:0.5,y:0.5} is dead centre, 0 to 1 is inside the frame, and a little overshoot (down to -1, up to 2) is how an entrance starts off-canvas. NOT pixels: the renderer maps x to `left: x*100%`, so `x: 180` sits 180 frame-widths away and draws nothing.",
-            "properties": {
-              "x": {
-                "maximum": 2,
-                "minimum": -1,
-                "type": "number"
-              },
-              "y": {
-                "maximum": 2,
-                "minimum": -1,
-                "type": "number"
-              }
-            },
-            "required": [
-              "x",
-              "y"
-            ],
-            "type": "object"
-          },
-          "region": {
-            "additionalProperties": false,
-            "properties": {
-              "h": {
-                "exclusiveMinimum": 0,
-                "maximum": 1,
-                "type": "number"
-              },
-              "w": {
-                "exclusiveMinimum": 0,
-                "maximum": 1,
-                "type": "number"
-              },
-              "x": {
-                "maximum": 1,
-                "minimum": 0,
-                "type": "number"
-              },
-              "y": {
-                "maximum": 1,
-                "minimum": 0,
-                "type": "number"
-              }
-            },
-            "required": [
-              "x",
-              "y",
-              "w",
-              "h"
-            ],
-            "type": "object"
-          },
-          "rotation": {
-            "type": "number"
-          },
-          "scale": {
-            "exclusiveMinimum": 0,
-            "type": "number"
-          },
-          "source": {
-            "anyOf": [
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "anchor": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "clipId": {
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "offsetMs": {
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "clipId",
-                      "offsetMs"
-                    ],
-                    "type": "object"
-                  },
-                  "audioRole": {
-                    "enum": [
-                      "sfx",
-                      "music",
-                      "vo",
-                      "ambience"
-                    ],
-                    "type": "string"
-                  },
-                  "duck": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "attackMs": {
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "duckDb": {
-                        "maximum": 0,
-                        "type": "number"
-                      },
-                      "releaseMs": {
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "windows": {
-                        "items": {
-                          "additionalProperties": false,
-                          "properties": {
-                            "endMs": {
-                              "type": "number"
-                            },
-                            "startMs": {
-                              "type": "number"
-                            }
-                          },
-                          "required": [
-                            "startMs",
-                            "endMs"
-                          ],
-                          "type": "object"
-                        },
-                        "type": "array"
-                      }
-                    },
-                    "required": [
-                      "duckDb",
-                      "attackMs",
-                      "releaseMs"
-                    ],
-                    "type": "object"
-                  },
-                  "excludedRanges": {
-                    "items": {
-                      "additionalProperties": false,
-                      "properties": {
-                        "end": {
-                          "minimum": 0,
-                          "type": "number"
-                        },
-                        "reason": {
-                          "type": "string"
-                        },
-                        "start": {
-                          "minimum": 0,
-                          "type": "number"
-                        }
-                      },
-                      "required": [
-                        "start",
-                        "end"
-                      ],
-                      "type": "object"
-                    },
-                    "type": "array"
-                  },
-                  "fadeInMs": {
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "fadeOutMs": {
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "kenBurns": {
-                    "enum": [
-                      "in",
-                      "out",
-                      "pan-l",
-                      "pan-r",
-                      "none"
-                    ],
-                    "type": "string"
-                  },
-                  "kind": {
-                    "const": "media",
-                    "type": "string"
-                  },
-                  "loop": {
-                    "type": "boolean"
-                  },
-                  "mediaId": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "muted": {
-                    "type": "boolean"
-                  },
-                  "playbackRate": {
-                    "exclusiveMinimum": 0,
-                    "type": "number"
-                  },
-                  "reframe": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "segments": {
-                        "items": {
-                          "additionalProperties": false,
-                          "properties": {
-                            "bias": {
-                              "additionalProperties": false,
-                              "description": "Optional FINE framing nudge off the focus center, source-normalized in [−0.3, 0.3]. A small correction (headroom, rule-of-thirds), NOT a reframe — use `focus`/`zoom` for the actual shot. Omit (treated as 0) to sit dead-center on the focus.",
-                              "properties": {
-                                "x": {
-                                  "description": "Horizontal nudge, source-normalized (+ = right).",
-                                  "maximum": 0.3,
-                                  "minimum": -0.3,
-                                  "type": "number"
-                                },
-                                "y": {
-                                  "description": "Vertical nudge, source-normalized (+ = down).",
-                                  "maximum": 0.3,
-                                  "minimum": -0.3,
-                                  "type": "number"
-                                }
-                              },
-                              "required": [
-                                "x",
-                                "y"
-                              ],
-                              "type": "object"
-                            },
-                            "ease": {
-                              "additionalProperties": false,
-                              "description": "Zoom/center ramp DURATIONS in SECONDS at this segment's edges — NOT a unitless 0–1 curve. ~0.3–0.6s reads as a snappy push; >1s reads sluggish. Keep `in` + `out` ≤ the segment's duration (endSec − startSec): the two edges share the span, so to ramp across the WHOLE segment set one edge to the full duration and the other to 0. Omit for an instant cut to this framing.",
-                              "properties": {
-                                "in": {
-                                  "description": "Ease-IN ramp DURATION in seconds at the segment START.",
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "out": {
-                                  "description": "Ease-OUT ramp DURATION in seconds at the segment END.",
-                                  "minimum": 0,
-                                  "type": "number"
-                                }
-                              },
-                              "required": [
-                                "in",
-                                "out"
-                              ],
-                              "type": "object"
-                            },
-                            "endSec": {
-                              "description": "Segment END in seconds, clip-relative. The span (endSec − startSec) is this segment's duration — the window `ease` ramps over.",
-                              "exclusiveMinimum": 0,
-                              "type": "number"
-                            },
-                            "focus": {
-                              "anyOf": [
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "mode": {
-                                      "const": "frame-center",
-                                      "type": "string"
-                                    }
-                                  },
-                                  "required": [
-                                    "mode"
-                                  ],
-                                  "type": "object"
-                                },
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "mode": {
-                                      "const": "point",
-                                      "type": "string"
-                                    },
-                                    "x": {
-                                      "maximum": 1,
-                                      "minimum": 0,
-                                      "type": "number"
-                                    },
-                                    "y": {
-                                      "maximum": 1,
-                                      "minimum": 0,
-                                      "type": "number"
-                                    }
-                                  },
-                                  "required": [
-                                    "mode",
-                                    "x",
-                                    "y"
-                                  ],
-                                  "type": "object"
-                                },
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "faceId": {
-                                      "minLength": 1,
-                                      "type": "string"
-                                    },
-                                    "mode": {
-                                      "const": "face",
-                                      "type": "string"
-                                    },
-                                    "shotScale": {
-                                      "enum": [
-                                        "close",
-                                        "standard",
-                                        "wide"
-                                      ],
-                                      "type": "string"
-                                    }
-                                  },
-                                  "required": [
-                                    "mode",
-                                    "faceId"
-                                  ],
-                                  "type": "object"
-                                },
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "mode": {
-                                      "const": "all-faces",
-                                      "type": "string"
-                                    }
-                                  },
-                                  "required": [
-                                    "mode"
-                                  ],
-                                  "type": "object"
-                                },
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "mode": {
-                                      "const": "active-speaker",
-                                      "type": "string"
-                                    }
-                                  },
-                                  "required": [
-                                    "mode"
-                                  ],
-                                  "type": "object"
-                                }
-                              ],
-                              "description": "WHO/WHAT the camera tracks this segment (the reframe center), selected by `mode`: `frame-center` = no tracking, hold the geometric center (static/graphic footage, or a pure zoom); `point` = lock to a fixed source-normalized {x,y} (a non-moving on-screen element); `face` = track a detected face by `faceId` (from get_media_context), with optional `shotScale` close|standard|wide for tightness; `all-faces` = frame the bounding box of every detected face (group/ensemble shots); `active-speaker` = follow whoever is speaking (diarized talking-head / podcast). Pick by what the beat is about; pair with `zoom` for how tight."
-                            },
-                            "intent": {
-                              "description": "Optional editorial LABEL for diff/log readability (e.g. 'speaker-tight', 'wide-context'). Cosmetic — NOT honored by the derive math and excluded from the variant cache key.",
-                              "type": "string"
-                            },
-                            "startSec": {
-                              "description": "Segment START in seconds, clip-relative. Segments tile the clip's duration in order.",
-                              "minimum": 0,
-                              "type": "number"
-                            },
-                            "zoom": {
-                              "description": "How TIGHT the framing is — the fraction of the source the output viewport shows. <1 punches IN (a smaller source fraction, magnified to fill the frame); 1 = the full frame (no crop). ~0.6–0.8 is a moderate push-in, ~0.5 a tight close-up, 0.1 the maximum zoom. There is NO zoom-OUT past the full frame (max 1). Omit for the full frame. MUTUALLY EXCLUSIVE with `focus.shotScale` — a face-tracked shot is sized EITHER by the editorial scale (shotScale, which the bake calibrates to the detected face) OR by an explicit zoom, never both. A segment carrying both is REJECTED: shotScale wins at bake time and the zoom would be silently discarded.",
-                              "maximum": 1,
-                              "minimum": 0.1,
-                              "type": "number"
-                            }
-                          },
-                          "required": [
-                            "startSec",
-                            "endSec",
-                            "focus"
-                          ],
-                          "type": "object"
-                        },
-                        "minItems": 1,
-                        "type": "array"
-                      }
-                    },
-                    "required": [
-                      "segments"
-                    ],
-                    "type": "object"
-                  },
-                  "sync": {
-                    "enum": [
-                      "video",
-                      "independent"
-                    ],
-                    "type": "string"
-                  },
-                  "trim": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "end": {
-                        "description": "Source trim end (seconds).",
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "start": {
-                        "description": "Source trim start (seconds).",
-                        "minimum": 0,
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "start",
-                      "end"
-                    ],
-                    "type": "object"
-                  },
-                  "volume": {
-                    "maximum": 4,
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "volumeDb": {
-                    "type": "number"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "mediaId"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "componentId": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "execution": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "assets": {
-                        "additionalProperties": {
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "componentId": {
-                        "maxLength": 256,
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "mediaBindings": {
-                        "additionalProperties": {
-                          "items": {
-                            "maxLength": 128,
-                            "minLength": 1,
-                            "type": "string"
-                          },
-                          "type": "array"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "params": {
-                        "additionalProperties": {
-                          "$ref": "#/$defs/__schema1"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "seed": {
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "sourceVersionId": {
-                        "pattern": "^[a-f0-9]{64}$",
-                        "type": "string"
-                      },
-                      "version": {
-                        "const": 3,
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "version",
-                      "componentId",
-                      "sourceVersionId",
-                      "params",
-                      "seed"
-                    ],
-                    "type": "object"
-                  },
-                  "kind": {
-                    "const": "component",
-                    "type": "string"
-                  },
-                  "placement": {
-                    "anyOf": [
-                      {
-                        "additionalProperties": false,
-                        "properties": {
-                          "kind": {
-                            "const": "clip",
-                            "type": "string"
-                          },
-                          "version": {
-                            "const": 3,
-                            "type": "number"
-                          }
-                        },
-                        "required": [
-                          "version",
-                          "kind"
-                        ],
-                        "type": "object"
-                      },
-                      {
-                        "additionalProperties": false,
-                        "properties": {
-                          "kind": {
-                            "const": "content-slots",
-                            "type": "string"
-                          },
-                          "slots": {
-                            "additionalProperties": {
-                              "additionalProperties": false,
-                              "properties": {
-                                "ownership": {
-                                  "enum": [
-                                    "reference",
-                                    "exclusive"
-                                  ],
-                                  "type": "string"
-                                },
-                                "targetClipIds": {
-                                  "items": {
-                                    "maxLength": 256,
-                                    "minLength": 1,
-                                    "type": "string"
-                                  },
-                                  "type": "array"
-                                }
-                              },
-                              "required": [
-                                "targetClipIds",
-                                "ownership"
-                              ],
-                              "type": "object"
-                            },
-                            "propertyNames": {
-                              "type": "string"
-                            },
-                            "type": "object"
-                          },
-                          "version": {
-                            "const": 3,
-                            "type": "number"
-                          }
-                        },
-                        "required": [
-                          "version",
-                          "kind",
-                          "slots"
-                        ],
-                        "type": "object"
-                      }
-                    ]
-                  },
-                  "props": {
-                    "additionalProperties": {},
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "zPlane": {
-                    "enum": [
-                      "front",
-                      "behind-subject"
-                    ],
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "componentId",
-                  "props",
-                  "execution",
-                  "placement"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "anchor": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "space": {
-                        "const": "scene",
-                        "type": "string"
-                      },
-                      "x": {
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "y": {
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "space",
-                      "x",
-                      "y"
-                    ],
-                    "type": "object"
-                  },
-                  "kind": {
-                    "const": "overlay",
-                    "type": "string"
-                  },
-                  "parallax": {
-                    "maximum": 0.3,
-                    "minimum": -0.3,
-                    "type": "number"
-                  },
-                  "params": {
-                    "additionalProperties": {},
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "primitiveId": {
-                    "minLength": 1,
-                    "pattern": "^(?!custom$)",
-                    "type": "string"
-                  },
-                  "zPlane": {
-                    "enum": [
-                      "front",
-                      "behind-subject"
-                    ],
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "primitiveId",
-                  "params"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "component": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "assets": {
-                        "additionalProperties": {
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "componentId": {
-                        "maxLength": 256,
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "mediaBindings": {
-                        "additionalProperties": {
-                          "items": {
-                            "maxLength": 128,
-                            "minLength": 1,
-                            "type": "string"
-                          },
-                          "type": "array"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "params": {
-                        "additionalProperties": {
-                          "$ref": "#/$defs/__schema1"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "seed": {
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "sourceVersionId": {
-                        "pattern": "^[a-f0-9]{64}$",
-                        "type": "string"
-                      },
-                      "version": {
-                        "const": 3,
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "version",
-                      "componentId",
-                      "sourceVersionId",
-                      "params",
-                      "seed"
-                    ],
-                    "type": "object"
-                  },
-                  "kind": {
-                    "const": "effect",
-                    "type": "string"
-                  },
-                  "params": {
-                    "additionalProperties": {},
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "primitiveId": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "targetTrackIds": {
-                    "items": {
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "minItems": 1,
-                    "type": "array"
-                  },
-                  "wrapperOrder": {
-                    "maximum": 9007199254740991,
-                    "minimum": 0,
-                    "type": "integer"
-                  }
-                },
-                "required": [
-                  "kind"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "html": {
-                    "description": "Your card's HTML — rendered VERBATIM as the graphic (shell motion via applyMotionPreset in a FOLLOWING call). CANVAS CONTRACT: the card renders in a viewport equal to the composition format's pixel frame (1080×1920 at 9:16 fhd); the root is NOT auto-pinned — declare explicit width/height matching the frame (box-sizing:border-box) and anchor content with flex/grid; position:absolute;inset:0 on the root does NOT fill the frame; for edge-to-edge backgrounds add an inner absolutely-positioned layer with generous negative inset. Overlay compositing applies a ~92% safe-area inset — keep critical copy away from the extreme edges. FONTS: name a family from GET /v1/fonts (list_render_fonts) — the renderer loads those faces for the card and waits for them, so `font-family: Inter` draws Inter. `@import` and remote font files are REFUSED: the card renders with no network. A family that is not on that list has no bytes behind it and the browser falls back, so end any stack with a generic (`Inter, sans-serif`) rather than relying on a system face being present.",
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "kind": {
-                    "const": "card",
-                    "type": "string"
-                  },
-                  "tokens": {
-                    "additionalProperties": {
-                      "type": "string"
-                    },
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "zPlane": {
-                    "const": "front",
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "html"
-                ],
-                "type": "object"
-              }
-            ]
-          },
-          "startTime": {
-            "description": "Timeline start (seconds).",
-            "minimum": 0,
-            "type": "number"
-          },
-          "transitionIn": {
-            "additionalProperties": false,
-            "properties": {
-              "component": {
-                "additionalProperties": false,
-                "properties": {
-                  "assets": {
-                    "additionalProperties": {
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "componentId": {
-                    "maxLength": 256,
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "mediaBindings": {
-                    "additionalProperties": {
-                      "items": {
-                        "maxLength": 128,
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "type": "array"
-                    },
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "params": {
-                    "additionalProperties": {
-                      "$ref": "#/$defs/__schema1"
-                    },
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "seed": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "sourceVersionId": {
-                    "pattern": "^[a-f0-9]{64}$",
-                    "type": "string"
-                  },
-                  "version": {
-                    "const": 3,
-                    "type": "number"
-                  }
-                },
-                "required": [
-                  "version",
-                  "componentId",
-                  "sourceVersionId",
-                  "params",
-                  "seed"
-                ],
-                "type": "object"
-              },
-              "duration": {
-                "exclusiveMinimum": 0,
-                "type": "number"
-              },
-              "fromClipId": {
-                "minLength": 1,
-                "type": "string"
-              },
-              "handlePolicy": {
-                "const": "outgoing-overrun-at-cut-v1",
-                "type": "string"
-              },
-              "id": {
-                "minLength": 1,
-                "type": "string"
-              },
-              "toClipId": {
-                "minLength": 1,
-                "type": "string"
-              },
-              "type": {
-                "minLength": 1,
-                "type": "string"
-              }
-            },
-            "required": [
-              "type",
-              "duration"
-            ],
-            "type": "object"
-          }
-        },
-        "required": [
-          "id",
-          "startTime",
-          "duration",
-          "source"
-        ],
-        "type": "object"
-      },
-      "newTrack": {
-        "type": "boolean"
-      },
-      "newTrackId": {
-        "type": "string"
-      },
-      "trackId": {
-        "type": "string"
-      },
-      "type": {
-        "const": "clip.add",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clip"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Remove a clip by id (located across every track).",
-    "properties": {
-      "clipId": {
-        "type": "string"
-      },
-      "type": {
-        "const": "clip.remove",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Patch an existing clip by id (cross-family). The patch is a partial TimelineClip. NOTE: `source` is REPLACED wholesale — the patch merges at the top level only, so a partial `source` WIPES the source fields you omit. Patch the whole source object when changing it. (To change reframe/excluded ranges, prefer setCropIntents / addExcludedRange, not a source patch.)",
-    "properties": {
-      "clipId": {
-        "type": "string"
-      },
-      "patch": {
-        "additionalProperties": false,
-        "properties": {
-          "animate": {
-            "additionalProperties": {
-              "items": {
-                "additionalProperties": false,
-                "properties": {
-                  "easing": {
-                    "anyOf": [
-                      {
-                        "enum": [
-                          "linear",
-                          "ease",
-                          "easeIn",
-                          "easeOut",
-                          "easeInOut"
-                        ],
-                        "type": "string"
-                      },
-                      {
-                        "additionalProperties": false,
-                        "properties": {
-                          "cubicBezier": {
-                            "items": false,
-                            "maxItems": 4,
-                            "minItems": 4,
-                            "prefixItems": [
-                              {
-                                "type": "number"
-                              },
-                              {
-                                "type": "number"
-                              },
-                              {
-                                "type": "number"
-                              },
-                              {
-                                "type": "number"
-                              }
-                            ],
-                            "type": "array"
-                          }
-                        },
-                        "required": [
-                          "cubicBezier"
-                        ],
-                        "type": "object"
-                      }
-                    ]
-                  },
-                  "time": {
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "value": {
-                    "type": "number"
-                  }
-                },
-                "required": [
-                  "time",
-                  "value"
-                ],
-                "type": "object"
-              },
-              "minItems": 2,
-              "type": "array"
-            },
-            "description": "Keyframe channels, clip-relative seconds. Each channel's values use the SAME unit as the scalar it animates: `opacity` 0 to 1, `scale` a multiplier (>0), `rotation` degrees, `position.x`/`position.y` a FRACTION of the frame like `position` (0.5 = centre; NOT pixels), `volume` 0 to 4.",
-            "propertyNames": {
-              "type": "string"
-            },
-            "type": "object"
-          },
-          "captionVisibility": {
-            "description": "Video media clip only. Hide native captions while this clip is topmost and covers the lower picture, or when an opaque, effect-free clip has an explicitly full-frame region, even with fit:contain. Caption words and timings remain stored and resume when another visible clip takes over.",
-            "enum": [
-              "visible",
-              "hidden"
-            ],
-            "type": "string"
-          },
-          "duration": {
-            "description": "Clip duration (seconds).",
-            "exclusiveMinimum": 0,
-            "type": "number"
-          },
-          "effects": {
-            "items": {
-              "additionalProperties": false,
-              "properties": {
-                "component": {
-                  "additionalProperties": false,
-                  "properties": {
-                    "assets": {
-                      "additionalProperties": {
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "componentId": {
-                      "maxLength": 256,
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "mediaBindings": {
-                      "additionalProperties": {
-                        "items": {
-                          "maxLength": 128,
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "type": "array"
-                      },
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "params": {
-                      "additionalProperties": {
-                        "$ref": "#/$defs/__schema1"
-                      },
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "seed": {
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "sourceVersionId": {
-                      "pattern": "^[a-f0-9]{64}$",
-                      "type": "string"
-                    },
-                    "version": {
-                      "const": 3,
-                      "type": "number"
-                    }
-                  },
-                  "required": [
-                    "version",
-                    "componentId",
-                    "sourceVersionId",
-                    "params",
-                    "seed"
-                  ],
-                  "type": "object"
-                },
-                "id": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "params": {
-                  "additionalProperties": {},
-                  "propertyNames": {
-                    "type": "string"
-                  },
-                  "type": "object"
-                },
-                "primitiveId": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "window": {
-                  "additionalProperties": false,
-                  "properties": {
-                    "duration": {
-                      "exclusiveMinimum": 0,
-                      "type": "number"
-                    },
-                    "startTime": {
-                      "minimum": 0,
-                      "type": "number"
-                    }
-                  },
-                  "required": [
-                    "startTime",
-                    "duration"
-                  ],
-                  "type": "object"
-                }
-              },
-              "type": "object"
-            },
-            "type": "array"
-          },
-          "fit": {
-            "enum": [
-              "cover",
-              "contain"
-            ],
-            "type": "string"
-          },
-          "id": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "kind": {
-            "enum": [
-              "video",
-              "audio",
-              "image",
-              "overlay",
-              "effect"
-            ],
-            "type": "string"
-          },
-          "linkGroupId": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "opacity": {
-            "maximum": 1,
-            "minimum": 0,
-            "type": "number"
-          },
-          "position": {
-            "additionalProperties": false,
-            "description": "Clip CENTRE as a fraction of the frame: {x:0.5,y:0.5} is dead centre, 0 to 1 is inside the frame, and a little overshoot (down to -1, up to 2) is how an entrance starts off-canvas. NOT pixels: the renderer maps x to `left: x*100%`, so `x: 180` sits 180 frame-widths away and draws nothing.",
-            "properties": {
-              "x": {
-                "maximum": 2,
-                "minimum": -1,
-                "type": "number"
-              },
-              "y": {
-                "maximum": 2,
-                "minimum": -1,
-                "type": "number"
-              }
-            },
-            "required": [
-              "x",
-              "y"
-            ],
-            "type": "object"
-          },
-          "region": {
-            "additionalProperties": false,
-            "properties": {
-              "h": {
-                "exclusiveMinimum": 0,
-                "maximum": 1,
-                "type": "number"
-              },
-              "w": {
-                "exclusiveMinimum": 0,
-                "maximum": 1,
-                "type": "number"
-              },
-              "x": {
-                "maximum": 1,
-                "minimum": 0,
-                "type": "number"
-              },
-              "y": {
-                "maximum": 1,
-                "minimum": 0,
-                "type": "number"
-              }
-            },
-            "required": [
-              "x",
-              "y",
-              "w",
-              "h"
-            ],
-            "type": "object"
-          },
-          "rotation": {
-            "type": "number"
-          },
-          "scale": {
-            "exclusiveMinimum": 0,
-            "type": "number"
-          },
-          "source": {
-            "anyOf": [
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "anchor": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "clipId": {
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "offsetMs": {
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "clipId",
-                      "offsetMs"
-                    ],
-                    "type": "object"
-                  },
-                  "audioRole": {
-                    "enum": [
-                      "sfx",
-                      "music",
-                      "vo",
-                      "ambience"
-                    ],
-                    "type": "string"
-                  },
-                  "duck": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "attackMs": {
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "duckDb": {
-                        "maximum": 0,
-                        "type": "number"
-                      },
-                      "releaseMs": {
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "windows": {
-                        "items": {
-                          "additionalProperties": false,
-                          "properties": {
-                            "endMs": {
-                              "type": "number"
-                            },
-                            "startMs": {
-                              "type": "number"
-                            }
-                          },
-                          "required": [
-                            "startMs",
-                            "endMs"
-                          ],
-                          "type": "object"
-                        },
-                        "type": "array"
-                      }
-                    },
-                    "required": [
-                      "duckDb",
-                      "attackMs",
-                      "releaseMs"
-                    ],
-                    "type": "object"
-                  },
-                  "excludedRanges": {
-                    "items": {
-                      "additionalProperties": false,
-                      "properties": {
-                        "end": {
-                          "minimum": 0,
-                          "type": "number"
-                        },
-                        "reason": {
-                          "type": "string"
-                        },
-                        "start": {
-                          "minimum": 0,
-                          "type": "number"
-                        }
-                      },
-                      "required": [
-                        "start",
-                        "end"
-                      ],
-                      "type": "object"
-                    },
-                    "type": "array"
-                  },
-                  "fadeInMs": {
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "fadeOutMs": {
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "kenBurns": {
-                    "enum": [
-                      "in",
-                      "out",
-                      "pan-l",
-                      "pan-r",
-                      "none"
-                    ],
-                    "type": "string"
-                  },
-                  "kind": {
-                    "const": "media",
-                    "type": "string"
-                  },
-                  "loop": {
-                    "type": "boolean"
-                  },
-                  "mediaId": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "muted": {
-                    "type": "boolean"
-                  },
-                  "playbackRate": {
-                    "exclusiveMinimum": 0,
-                    "type": "number"
-                  },
-                  "reframe": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "segments": {
-                        "items": {
-                          "additionalProperties": false,
-                          "properties": {
-                            "bias": {
-                              "additionalProperties": false,
-                              "description": "Optional FINE framing nudge off the focus center, source-normalized in [−0.3, 0.3]. A small correction (headroom, rule-of-thirds), NOT a reframe — use `focus`/`zoom` for the actual shot. Omit (treated as 0) to sit dead-center on the focus.",
-                              "properties": {
-                                "x": {
-                                  "description": "Horizontal nudge, source-normalized (+ = right).",
-                                  "maximum": 0.3,
-                                  "minimum": -0.3,
-                                  "type": "number"
-                                },
-                                "y": {
-                                  "description": "Vertical nudge, source-normalized (+ = down).",
-                                  "maximum": 0.3,
-                                  "minimum": -0.3,
-                                  "type": "number"
-                                }
-                              },
-                              "required": [
-                                "x",
-                                "y"
-                              ],
-                              "type": "object"
-                            },
-                            "ease": {
-                              "additionalProperties": false,
-                              "description": "Zoom/center ramp DURATIONS in SECONDS at this segment's edges — NOT a unitless 0–1 curve. ~0.3–0.6s reads as a snappy push; >1s reads sluggish. Keep `in` + `out` ≤ the segment's duration (endSec − startSec): the two edges share the span, so to ramp across the WHOLE segment set one edge to the full duration and the other to 0. Omit for an instant cut to this framing.",
-                              "properties": {
-                                "in": {
-                                  "description": "Ease-IN ramp DURATION in seconds at the segment START.",
-                                  "minimum": 0,
-                                  "type": "number"
-                                },
-                                "out": {
-                                  "description": "Ease-OUT ramp DURATION in seconds at the segment END.",
-                                  "minimum": 0,
-                                  "type": "number"
-                                }
-                              },
-                              "required": [
-                                "in",
-                                "out"
-                              ],
-                              "type": "object"
-                            },
-                            "endSec": {
-                              "description": "Segment END in seconds, clip-relative. The span (endSec − startSec) is this segment's duration — the window `ease` ramps over.",
-                              "exclusiveMinimum": 0,
-                              "type": "number"
-                            },
-                            "focus": {
-                              "anyOf": [
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "mode": {
-                                      "const": "frame-center",
-                                      "type": "string"
-                                    }
-                                  },
-                                  "required": [
-                                    "mode"
-                                  ],
-                                  "type": "object"
-                                },
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "mode": {
-                                      "const": "point",
-                                      "type": "string"
-                                    },
-                                    "x": {
-                                      "maximum": 1,
-                                      "minimum": 0,
-                                      "type": "number"
-                                    },
-                                    "y": {
-                                      "maximum": 1,
-                                      "minimum": 0,
-                                      "type": "number"
-                                    }
-                                  },
-                                  "required": [
-                                    "mode",
-                                    "x",
-                                    "y"
-                                  ],
-                                  "type": "object"
-                                },
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "faceId": {
-                                      "minLength": 1,
-                                      "type": "string"
-                                    },
-                                    "mode": {
-                                      "const": "face",
-                                      "type": "string"
-                                    },
-                                    "shotScale": {
-                                      "enum": [
-                                        "close",
-                                        "standard",
-                                        "wide"
-                                      ],
-                                      "type": "string"
-                                    }
-                                  },
-                                  "required": [
-                                    "mode",
-                                    "faceId"
-                                  ],
-                                  "type": "object"
-                                },
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "mode": {
-                                      "const": "all-faces",
-                                      "type": "string"
-                                    }
-                                  },
-                                  "required": [
-                                    "mode"
-                                  ],
-                                  "type": "object"
-                                },
-                                {
-                                  "additionalProperties": false,
-                                  "properties": {
-                                    "mode": {
-                                      "const": "active-speaker",
-                                      "type": "string"
-                                    }
-                                  },
-                                  "required": [
-                                    "mode"
-                                  ],
-                                  "type": "object"
-                                }
-                              ],
-                              "description": "WHO/WHAT the camera tracks this segment (the reframe center), selected by `mode`: `frame-center` = no tracking, hold the geometric center (static/graphic footage, or a pure zoom); `point` = lock to a fixed source-normalized {x,y} (a non-moving on-screen element); `face` = track a detected face by `faceId` (from get_media_context), with optional `shotScale` close|standard|wide for tightness; `all-faces` = frame the bounding box of every detected face (group/ensemble shots); `active-speaker` = follow whoever is speaking (diarized talking-head / podcast). Pick by what the beat is about; pair with `zoom` for how tight."
-                            },
-                            "intent": {
-                              "description": "Optional editorial LABEL for diff/log readability (e.g. 'speaker-tight', 'wide-context'). Cosmetic — NOT honored by the derive math and excluded from the variant cache key.",
-                              "type": "string"
-                            },
-                            "startSec": {
-                              "description": "Segment START in seconds, clip-relative. Segments tile the clip's duration in order.",
-                              "minimum": 0,
-                              "type": "number"
-                            },
-                            "zoom": {
-                              "description": "How TIGHT the framing is — the fraction of the source the output viewport shows. <1 punches IN (a smaller source fraction, magnified to fill the frame); 1 = the full frame (no crop). ~0.6–0.8 is a moderate push-in, ~0.5 a tight close-up, 0.1 the maximum zoom. There is NO zoom-OUT past the full frame (max 1). Omit for the full frame. MUTUALLY EXCLUSIVE with `focus.shotScale` — a face-tracked shot is sized EITHER by the editorial scale (shotScale, which the bake calibrates to the detected face) OR by an explicit zoom, never both. A segment carrying both is REJECTED: shotScale wins at bake time and the zoom would be silently discarded.",
-                              "maximum": 1,
-                              "minimum": 0.1,
-                              "type": "number"
-                            }
-                          },
-                          "required": [
-                            "startSec",
-                            "endSec",
-                            "focus"
-                          ],
-                          "type": "object"
-                        },
-                        "minItems": 1,
-                        "type": "array"
-                      }
-                    },
-                    "required": [
-                      "segments"
-                    ],
-                    "type": "object"
-                  },
-                  "sync": {
-                    "enum": [
-                      "video",
-                      "independent"
-                    ],
-                    "type": "string"
-                  },
-                  "trim": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "end": {
-                        "description": "Source trim end (seconds).",
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "start": {
-                        "description": "Source trim start (seconds).",
-                        "minimum": 0,
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "start",
-                      "end"
-                    ],
-                    "type": "object"
-                  },
-                  "volume": {
-                    "maximum": 4,
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "volumeDb": {
-                    "type": "number"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "mediaId"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "componentId": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "execution": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "assets": {
-                        "additionalProperties": {
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "componentId": {
-                        "maxLength": 256,
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "mediaBindings": {
-                        "additionalProperties": {
-                          "items": {
-                            "maxLength": 128,
-                            "minLength": 1,
-                            "type": "string"
-                          },
-                          "type": "array"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "params": {
-                        "additionalProperties": {
-                          "$ref": "#/$defs/__schema1"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "seed": {
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "sourceVersionId": {
-                        "pattern": "^[a-f0-9]{64}$",
-                        "type": "string"
-                      },
-                      "version": {
-                        "const": 3,
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "version",
-                      "componentId",
-                      "sourceVersionId",
-                      "params",
-                      "seed"
-                    ],
-                    "type": "object"
-                  },
-                  "kind": {
-                    "const": "component",
-                    "type": "string"
-                  },
-                  "placement": {
-                    "anyOf": [
-                      {
-                        "additionalProperties": false,
-                        "properties": {
-                          "kind": {
-                            "const": "clip",
-                            "type": "string"
-                          },
-                          "version": {
-                            "const": 3,
-                            "type": "number"
-                          }
-                        },
-                        "required": [
-                          "version",
-                          "kind"
-                        ],
-                        "type": "object"
-                      },
-                      {
-                        "additionalProperties": false,
-                        "properties": {
-                          "kind": {
-                            "const": "content-slots",
-                            "type": "string"
-                          },
-                          "slots": {
-                            "additionalProperties": {
-                              "additionalProperties": false,
-                              "properties": {
-                                "ownership": {
-                                  "enum": [
-                                    "reference",
-                                    "exclusive"
-                                  ],
-                                  "type": "string"
-                                },
-                                "targetClipIds": {
-                                  "items": {
-                                    "maxLength": 256,
-                                    "minLength": 1,
-                                    "type": "string"
-                                  },
-                                  "type": "array"
-                                }
-                              },
-                              "required": [
-                                "targetClipIds",
-                                "ownership"
-                              ],
-                              "type": "object"
-                            },
-                            "propertyNames": {
-                              "type": "string"
-                            },
-                            "type": "object"
-                          },
-                          "version": {
-                            "const": 3,
-                            "type": "number"
-                          }
-                        },
-                        "required": [
-                          "version",
-                          "kind",
-                          "slots"
-                        ],
-                        "type": "object"
-                      }
-                    ]
-                  },
-                  "props": {
-                    "additionalProperties": {},
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "zPlane": {
-                    "enum": [
-                      "front",
-                      "behind-subject"
-                    ],
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "componentId",
-                  "props",
-                  "execution",
-                  "placement"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "anchor": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "space": {
-                        "const": "scene",
-                        "type": "string"
-                      },
-                      "x": {
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      },
-                      "y": {
-                        "maximum": 1,
-                        "minimum": 0,
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "space",
-                      "x",
-                      "y"
-                    ],
-                    "type": "object"
-                  },
-                  "kind": {
-                    "const": "overlay",
-                    "type": "string"
-                  },
-                  "parallax": {
-                    "maximum": 0.3,
-                    "minimum": -0.3,
-                    "type": "number"
-                  },
-                  "params": {
-                    "additionalProperties": {},
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "primitiveId": {
-                    "minLength": 1,
-                    "pattern": "^(?!custom$)",
-                    "type": "string"
-                  },
-                  "zPlane": {
-                    "enum": [
-                      "front",
-                      "behind-subject"
-                    ],
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "primitiveId",
-                  "params"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "component": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "assets": {
-                        "additionalProperties": {
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "componentId": {
-                        "maxLength": 256,
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "mediaBindings": {
-                        "additionalProperties": {
-                          "items": {
-                            "maxLength": 128,
-                            "minLength": 1,
-                            "type": "string"
-                          },
-                          "type": "array"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "params": {
-                        "additionalProperties": {
-                          "$ref": "#/$defs/__schema1"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "seed": {
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "sourceVersionId": {
-                        "pattern": "^[a-f0-9]{64}$",
-                        "type": "string"
-                      },
-                      "version": {
-                        "const": 3,
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "version",
-                      "componentId",
-                      "sourceVersionId",
-                      "params",
-                      "seed"
-                    ],
-                    "type": "object"
-                  },
-                  "kind": {
-                    "const": "effect",
-                    "type": "string"
-                  },
-                  "params": {
-                    "additionalProperties": {},
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "primitiveId": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "targetTrackIds": {
-                    "items": {
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "minItems": 1,
-                    "type": "array"
-                  },
-                  "wrapperOrder": {
-                    "maximum": 9007199254740991,
-                    "minimum": 0,
-                    "type": "integer"
-                  }
-                },
-                "required": [
-                  "kind"
-                ],
-                "type": "object"
-              },
-              {
-                "additionalProperties": false,
-                "properties": {
-                  "html": {
-                    "description": "Your card's HTML — rendered VERBATIM as the graphic (shell motion via applyMotionPreset in a FOLLOWING call). CANVAS CONTRACT: the card renders in a viewport equal to the composition format's pixel frame (1080×1920 at 9:16 fhd); the root is NOT auto-pinned — declare explicit width/height matching the frame (box-sizing:border-box) and anchor content with flex/grid; position:absolute;inset:0 on the root does NOT fill the frame; for edge-to-edge backgrounds add an inner absolutely-positioned layer with generous negative inset. Overlay compositing applies a ~92% safe-area inset — keep critical copy away from the extreme edges. FONTS: name a family from GET /v1/fonts (list_render_fonts) — the renderer loads those faces for the card and waits for them, so `font-family: Inter` draws Inter. `@import` and remote font files are REFUSED: the card renders with no network. A family that is not on that list has no bytes behind it and the browser falls back, so end any stack with a generic (`Inter, sans-serif`) rather than relying on a system face being present.",
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "kind": {
-                    "const": "card",
-                    "type": "string"
-                  },
-                  "tokens": {
-                    "additionalProperties": {
-                      "type": "string"
-                    },
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "zPlane": {
-                    "const": "front",
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "kind",
-                  "html"
-                ],
-                "type": "object"
-              }
-            ]
-          },
-          "startTime": {
-            "description": "Timeline start (seconds).",
-            "minimum": 0,
-            "type": "number"
-          },
-          "transitionIn": {
-            "additionalProperties": false,
-            "properties": {
-              "component": {
-                "additionalProperties": false,
-                "properties": {
-                  "assets": {
-                    "additionalProperties": {
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "componentId": {
-                    "maxLength": 256,
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "mediaBindings": {
-                    "additionalProperties": {
-                      "items": {
-                        "maxLength": 128,
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "type": "array"
-                    },
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "params": {
-                    "additionalProperties": {
-                      "$ref": "#/$defs/__schema1"
-                    },
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "seed": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "sourceVersionId": {
-                    "pattern": "^[a-f0-9]{64}$",
-                    "type": "string"
-                  },
-                  "version": {
-                    "const": 3,
-                    "type": "number"
-                  }
-                },
-                "required": [
-                  "version",
-                  "componentId",
-                  "sourceVersionId",
-                  "params",
-                  "seed"
-                ],
-                "type": "object"
-              },
-              "duration": {
-                "exclusiveMinimum": 0,
-                "type": "number"
-              },
-              "fromClipId": {
-                "minLength": 1,
-                "type": "string"
-              },
-              "handlePolicy": {
-                "const": "outgoing-overrun-at-cut-v1",
-                "type": "string"
-              },
-              "id": {
-                "minLength": 1,
-                "type": "string"
-              },
-              "toClipId": {
-                "minLength": 1,
-                "type": "string"
-              },
-              "type": {
-                "minLength": 1,
-                "type": "string"
-              }
-            },
-            "required": [
-              "type",
-              "duration"
-            ],
-            "type": "object"
-          }
-        },
-        "type": "object"
-      },
-      "type": {
-        "const": "clip.update",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId",
-      "patch"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Remove EVERY clip sourced from a given mediaId (e.g. after deleting that media).",
-    "properties": {
-      "mediaId": {
-        "type": "string"
-      },
-      "type": {
-        "const": "removeClipsByMediaId",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "mediaId"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Replace the overlay channel wholesale with the given clips (bulk set, not a merge).",
-    "properties": {
-      "clips": {
-        "items": {
-          "additionalProperties": false,
-          "properties": {
-            "animate": {
-              "additionalProperties": {
-                "items": {
-                  "additionalProperties": false,
-                  "properties": {
-                    "easing": {
-                      "anyOf": [
-                        {
-                          "enum": [
-                            "linear",
-                            "ease",
-                            "easeIn",
-                            "easeOut",
-                            "easeInOut"
-                          ],
-                          "type": "string"
-                        },
-                        {
-                          "additionalProperties": false,
-                          "properties": {
-                            "cubicBezier": {
-                              "items": false,
-                              "maxItems": 4,
-                              "minItems": 4,
-                              "prefixItems": [
-                                {
-                                  "type": "number"
-                                },
-                                {
-                                  "type": "number"
-                                },
-                                {
-                                  "type": "number"
-                                },
-                                {
-                                  "type": "number"
-                                }
-                              ],
-                              "type": "array"
-                            }
-                          },
-                          "required": [
-                            "cubicBezier"
-                          ],
-                          "type": "object"
-                        }
-                      ]
-                    },
-                    "time": {
-                      "minimum": 0,
-                      "type": "number"
-                    },
-                    "value": {
-                      "type": "number"
-                    }
-                  },
-                  "required": [
-                    "time",
-                    "value"
-                  ],
-                  "type": "object"
-                },
-                "minItems": 2,
-                "type": "array"
-              },
-              "description": "Keyframe channels, clip-relative seconds. Each channel's values use the SAME unit as the scalar it animates: `opacity` 0 to 1, `scale` a multiplier (>0), `rotation` degrees, `position.x`/`position.y` a FRACTION of the frame like `position` (0.5 = centre; NOT pixels), `volume` 0 to 4.",
-              "propertyNames": {
-                "type": "string"
-              },
-              "type": "object"
-            },
-            "captionVisibility": {
-              "description": "Video media clip only. Hide native captions while this clip is topmost and covers the lower picture, or when an opaque, effect-free clip has an explicitly full-frame region, even with fit:contain. Caption words and timings remain stored and resume when another visible clip takes over.",
-              "enum": [
-                "visible",
-                "hidden"
-              ],
-              "type": "string"
-            },
-            "duration": {
-              "description": "Clip duration (seconds).",
-              "exclusiveMinimum": 0,
-              "type": "number"
-            },
-            "effects": {
-              "items": {
-                "additionalProperties": false,
-                "properties": {
-                  "component": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "assets": {
-                        "additionalProperties": {
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "componentId": {
-                        "maxLength": 256,
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "mediaBindings": {
-                        "additionalProperties": {
-                          "items": {
-                            "maxLength": 128,
-                            "minLength": 1,
-                            "type": "string"
-                          },
-                          "type": "array"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "params": {
-                        "additionalProperties": {
-                          "$ref": "#/$defs/__schema1"
-                        },
-                        "propertyNames": {
-                          "type": "string"
-                        },
-                        "type": "object"
-                      },
-                      "seed": {
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "sourceVersionId": {
-                        "pattern": "^[a-f0-9]{64}$",
-                        "type": "string"
-                      },
-                      "version": {
-                        "const": 3,
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "version",
-                      "componentId",
-                      "sourceVersionId",
-                      "params",
-                      "seed"
-                    ],
-                    "type": "object"
-                  },
-                  "id": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "params": {
-                    "additionalProperties": {},
-                    "propertyNames": {
-                      "type": "string"
-                    },
-                    "type": "object"
-                  },
-                  "primitiveId": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "window": {
-                    "additionalProperties": false,
-                    "properties": {
-                      "duration": {
-                        "exclusiveMinimum": 0,
-                        "type": "number"
-                      },
-                      "startTime": {
-                        "minimum": 0,
-                        "type": "number"
-                      }
-                    },
-                    "required": [
-                      "startTime",
-                      "duration"
-                    ],
-                    "type": "object"
-                  }
-                },
-                "type": "object"
-              },
-              "type": "array"
-            },
-            "fit": {
-              "enum": [
-                "cover",
-                "contain"
-              ],
-              "type": "string"
-            },
-            "id": {
-              "minLength": 1,
-              "type": "string"
-            },
-            "kind": {
-              "enum": [
-                "video",
-                "audio",
-                "image",
-                "overlay",
-                "effect"
-              ],
-              "type": "string"
-            },
-            "linkGroupId": {
-              "minLength": 1,
-              "type": "string"
-            },
-            "opacity": {
-              "maximum": 1,
-              "minimum": 0,
-              "type": "number"
-            },
-            "position": {
-              "additionalProperties": false,
-              "description": "Clip CENTRE as a fraction of the frame: {x:0.5,y:0.5} is dead centre, 0 to 1 is inside the frame, and a little overshoot (down to -1, up to 2) is how an entrance starts off-canvas. NOT pixels: the renderer maps x to `left: x*100%`, so `x: 180` sits 180 frame-widths away and draws nothing.",
-              "properties": {
-                "x": {
-                  "maximum": 2,
-                  "minimum": -1,
-                  "type": "number"
-                },
-                "y": {
-                  "maximum": 2,
-                  "minimum": -1,
-                  "type": "number"
-                }
-              },
-              "required": [
-                "x",
-                "y"
-              ],
-              "type": "object"
-            },
-            "region": {
-              "additionalProperties": false,
-              "properties": {
-                "h": {
-                  "exclusiveMinimum": 0,
-                  "maximum": 1,
-                  "type": "number"
-                },
-                "w": {
-                  "exclusiveMinimum": 0,
-                  "maximum": 1,
-                  "type": "number"
-                },
-                "x": {
-                  "maximum": 1,
-                  "minimum": 0,
-                  "type": "number"
-                },
-                "y": {
-                  "maximum": 1,
-                  "minimum": 0,
-                  "type": "number"
-                }
-              },
-              "required": [
-                "x",
-                "y",
-                "w",
-                "h"
-              ],
-              "type": "object"
-            },
-            "rotation": {
-              "type": "number"
-            },
-            "scale": {
-              "exclusiveMinimum": 0,
-              "type": "number"
-            },
-            "source": {
-              "anyOf": [
-                {
-                  "additionalProperties": false,
-                  "properties": {
-                    "anchor": {
-                      "additionalProperties": false,
-                      "properties": {
-                        "clipId": {
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "offsetMs": {
-                          "type": "number"
-                        }
-                      },
-                      "required": [
-                        "clipId",
-                        "offsetMs"
-                      ],
-                      "type": "object"
-                    },
-                    "audioRole": {
-                      "enum": [
-                        "sfx",
-                        "music",
-                        "vo",
-                        "ambience"
-                      ],
-                      "type": "string"
-                    },
-                    "duck": {
-                      "additionalProperties": false,
-                      "properties": {
-                        "attackMs": {
-                          "minimum": 0,
-                          "type": "number"
-                        },
-                        "duckDb": {
-                          "maximum": 0,
-                          "type": "number"
-                        },
-                        "releaseMs": {
-                          "minimum": 0,
-                          "type": "number"
-                        },
-                        "windows": {
-                          "items": {
-                            "additionalProperties": false,
-                            "properties": {
-                              "endMs": {
-                                "type": "number"
-                              },
-                              "startMs": {
-                                "type": "number"
-                              }
-                            },
-                            "required": [
-                              "startMs",
-                              "endMs"
-                            ],
-                            "type": "object"
-                          },
-                          "type": "array"
-                        }
-                      },
-                      "required": [
-                        "duckDb",
-                        "attackMs",
-                        "releaseMs"
-                      ],
-                      "type": "object"
-                    },
-                    "excludedRanges": {
-                      "items": {
-                        "additionalProperties": false,
-                        "properties": {
-                          "end": {
-                            "minimum": 0,
-                            "type": "number"
-                          },
-                          "reason": {
-                            "type": "string"
-                          },
-                          "start": {
-                            "minimum": 0,
-                            "type": "number"
-                          }
-                        },
-                        "required": [
-                          "start",
-                          "end"
-                        ],
-                        "type": "object"
-                      },
-                      "type": "array"
-                    },
-                    "fadeInMs": {
-                      "minimum": 0,
-                      "type": "number"
-                    },
-                    "fadeOutMs": {
-                      "minimum": 0,
-                      "type": "number"
-                    },
-                    "kenBurns": {
-                      "enum": [
-                        "in",
-                        "out",
-                        "pan-l",
-                        "pan-r",
-                        "none"
-                      ],
-                      "type": "string"
-                    },
-                    "kind": {
-                      "const": "media",
-                      "type": "string"
-                    },
-                    "loop": {
-                      "type": "boolean"
-                    },
-                    "mediaId": {
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "muted": {
-                      "type": "boolean"
-                    },
-                    "playbackRate": {
-                      "exclusiveMinimum": 0,
-                      "type": "number"
-                    },
-                    "reframe": {
-                      "additionalProperties": false,
-                      "properties": {
-                        "segments": {
-                          "items": {
-                            "additionalProperties": false,
-                            "properties": {
-                              "bias": {
-                                "additionalProperties": false,
-                                "description": "Optional FINE framing nudge off the focus center, source-normalized in [−0.3, 0.3]. A small correction (headroom, rule-of-thirds), NOT a reframe — use `focus`/`zoom` for the actual shot. Omit (treated as 0) to sit dead-center on the focus.",
-                                "properties": {
-                                  "x": {
-                                    "description": "Horizontal nudge, source-normalized (+ = right).",
-                                    "maximum": 0.3,
-                                    "minimum": -0.3,
-                                    "type": "number"
-                                  },
-                                  "y": {
-                                    "description": "Vertical nudge, source-normalized (+ = down).",
-                                    "maximum": 0.3,
-                                    "minimum": -0.3,
-                                    "type": "number"
-                                  }
-                                },
-                                "required": [
-                                  "x",
-                                  "y"
-                                ],
-                                "type": "object"
-                              },
-                              "ease": {
-                                "additionalProperties": false,
-                                "description": "Zoom/center ramp DURATIONS in SECONDS at this segment's edges — NOT a unitless 0–1 curve. ~0.3–0.6s reads as a snappy push; >1s reads sluggish. Keep `in` + `out` ≤ the segment's duration (endSec − startSec): the two edges share the span, so to ramp across the WHOLE segment set one edge to the full duration and the other to 0. Omit for an instant cut to this framing.",
-                                "properties": {
-                                  "in": {
-                                    "description": "Ease-IN ramp DURATION in seconds at the segment START.",
-                                    "minimum": 0,
-                                    "type": "number"
-                                  },
-                                  "out": {
-                                    "description": "Ease-OUT ramp DURATION in seconds at the segment END.",
-                                    "minimum": 0,
-                                    "type": "number"
-                                  }
-                                },
-                                "required": [
-                                  "in",
-                                  "out"
-                                ],
-                                "type": "object"
-                              },
-                              "endSec": {
-                                "description": "Segment END in seconds, clip-relative. The span (endSec − startSec) is this segment's duration — the window `ease` ramps over.",
-                                "exclusiveMinimum": 0,
-                                "type": "number"
-                              },
-                              "focus": {
-                                "anyOf": [
-                                  {
-                                    "additionalProperties": false,
-                                    "properties": {
-                                      "mode": {
-                                        "const": "frame-center",
-                                        "type": "string"
-                                      }
-                                    },
-                                    "required": [
-                                      "mode"
-                                    ],
-                                    "type": "object"
-                                  },
-                                  {
-                                    "additionalProperties": false,
-                                    "properties": {
-                                      "mode": {
-                                        "const": "point",
-                                        "type": "string"
-                                      },
-                                      "x": {
-                                        "maximum": 1,
-                                        "minimum": 0,
-                                        "type": "number"
-                                      },
-                                      "y": {
-                                        "maximum": 1,
-                                        "minimum": 0,
-                                        "type": "number"
-                                      }
-                                    },
-                                    "required": [
-                                      "mode",
-                                      "x",
-                                      "y"
-                                    ],
-                                    "type": "object"
-                                  },
-                                  {
-                                    "additionalProperties": false,
-                                    "properties": {
-                                      "faceId": {
-                                        "minLength": 1,
-                                        "type": "string"
-                                      },
-                                      "mode": {
-                                        "const": "face",
-                                        "type": "string"
-                                      },
-                                      "shotScale": {
-                                        "enum": [
-                                          "close",
-                                          "standard",
-                                          "wide"
-                                        ],
-                                        "type": "string"
-                                      }
-                                    },
-                                    "required": [
-                                      "mode",
-                                      "faceId"
-                                    ],
-                                    "type": "object"
-                                  },
-                                  {
-                                    "additionalProperties": false,
-                                    "properties": {
-                                      "mode": {
-                                        "const": "all-faces",
-                                        "type": "string"
-                                      }
-                                    },
-                                    "required": [
-                                      "mode"
-                                    ],
-                                    "type": "object"
-                                  },
-                                  {
-                                    "additionalProperties": false,
-                                    "properties": {
-                                      "mode": {
-                                        "const": "active-speaker",
-                                        "type": "string"
-                                      }
-                                    },
-                                    "required": [
-                                      "mode"
-                                    ],
-                                    "type": "object"
-                                  }
-                                ],
-                                "description": "WHO/WHAT the camera tracks this segment (the reframe center), selected by `mode`: `frame-center` = no tracking, hold the geometric center (static/graphic footage, or a pure zoom); `point` = lock to a fixed source-normalized {x,y} (a non-moving on-screen element); `face` = track a detected face by `faceId` (from get_media_context), with optional `shotScale` close|standard|wide for tightness; `all-faces` = frame the bounding box of every detected face (group/ensemble shots); `active-speaker` = follow whoever is speaking (diarized talking-head / podcast). Pick by what the beat is about; pair with `zoom` for how tight."
-                              },
-                              "intent": {
-                                "description": "Optional editorial LABEL for diff/log readability (e.g. 'speaker-tight', 'wide-context'). Cosmetic — NOT honored by the derive math and excluded from the variant cache key.",
-                                "type": "string"
-                              },
-                              "startSec": {
-                                "description": "Segment START in seconds, clip-relative. Segments tile the clip's duration in order.",
-                                "minimum": 0,
-                                "type": "number"
-                              },
-                              "zoom": {
-                                "description": "How TIGHT the framing is — the fraction of the source the output viewport shows. <1 punches IN (a smaller source fraction, magnified to fill the frame); 1 = the full frame (no crop). ~0.6–0.8 is a moderate push-in, ~0.5 a tight close-up, 0.1 the maximum zoom. There is NO zoom-OUT past the full frame (max 1). Omit for the full frame. MUTUALLY EXCLUSIVE with `focus.shotScale` — a face-tracked shot is sized EITHER by the editorial scale (shotScale, which the bake calibrates to the detected face) OR by an explicit zoom, never both. A segment carrying both is REJECTED: shotScale wins at bake time and the zoom would be silently discarded.",
-                                "maximum": 1,
-                                "minimum": 0.1,
-                                "type": "number"
-                              }
-                            },
-                            "required": [
-                              "startSec",
-                              "endSec",
-                              "focus"
-                            ],
-                            "type": "object"
-                          },
-                          "minItems": 1,
-                          "type": "array"
-                        }
-                      },
-                      "required": [
-                        "segments"
-                      ],
-                      "type": "object"
-                    },
-                    "sync": {
-                      "enum": [
-                        "video",
-                        "independent"
-                      ],
-                      "type": "string"
-                    },
-                    "trim": {
-                      "additionalProperties": false,
-                      "properties": {
-                        "end": {
-                          "description": "Source trim end (seconds).",
-                          "minimum": 0,
-                          "type": "number"
-                        },
-                        "start": {
-                          "description": "Source trim start (seconds).",
-                          "minimum": 0,
-                          "type": "number"
-                        }
-                      },
-                      "required": [
-                        "start",
-                        "end"
-                      ],
-                      "type": "object"
-                    },
-                    "volume": {
-                      "maximum": 4,
-                      "minimum": 0,
-                      "type": "number"
-                    },
-                    "volumeDb": {
-                      "type": "number"
-                    }
-                  },
-                  "required": [
-                    "kind",
-                    "mediaId"
-                  ],
-                  "type": "object"
-                },
-                {
-                  "additionalProperties": false,
-                  "properties": {
-                    "componentId": {
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "execution": {
-                      "additionalProperties": false,
-                      "properties": {
-                        "assets": {
-                          "additionalProperties": {
-                            "minLength": 1,
-                            "type": "string"
-                          },
-                          "propertyNames": {
-                            "type": "string"
-                          },
-                          "type": "object"
-                        },
-                        "componentId": {
-                          "maxLength": 256,
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "mediaBindings": {
-                          "additionalProperties": {
-                            "items": {
-                              "maxLength": 128,
-                              "minLength": 1,
-                              "type": "string"
-                            },
-                            "type": "array"
-                          },
-                          "propertyNames": {
-                            "type": "string"
-                          },
-                          "type": "object"
-                        },
-                        "params": {
-                          "additionalProperties": {
-                            "$ref": "#/$defs/__schema1"
-                          },
-                          "propertyNames": {
-                            "type": "string"
-                          },
-                          "type": "object"
-                        },
-                        "seed": {
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "sourceVersionId": {
-                          "pattern": "^[a-f0-9]{64}$",
-                          "type": "string"
-                        },
-                        "version": {
-                          "const": 3,
-                          "type": "number"
-                        }
-                      },
-                      "required": [
-                        "version",
-                        "componentId",
-                        "sourceVersionId",
-                        "params",
-                        "seed"
-                      ],
-                      "type": "object"
-                    },
-                    "kind": {
-                      "const": "component",
-                      "type": "string"
-                    },
-                    "placement": {
-                      "anyOf": [
-                        {
-                          "additionalProperties": false,
-                          "properties": {
-                            "kind": {
-                              "const": "clip",
-                              "type": "string"
-                            },
-                            "version": {
-                              "const": 3,
-                              "type": "number"
-                            }
-                          },
-                          "required": [
-                            "version",
-                            "kind"
-                          ],
-                          "type": "object"
-                        },
-                        {
-                          "additionalProperties": false,
-                          "properties": {
-                            "kind": {
-                              "const": "content-slots",
-                              "type": "string"
-                            },
-                            "slots": {
-                              "additionalProperties": {
-                                "additionalProperties": false,
-                                "properties": {
-                                  "ownership": {
-                                    "enum": [
-                                      "reference",
-                                      "exclusive"
-                                    ],
-                                    "type": "string"
-                                  },
-                                  "targetClipIds": {
-                                    "items": {
-                                      "maxLength": 256,
-                                      "minLength": 1,
-                                      "type": "string"
-                                    },
-                                    "type": "array"
-                                  }
-                                },
-                                "required": [
-                                  "targetClipIds",
-                                  "ownership"
-                                ],
-                                "type": "object"
-                              },
-                              "propertyNames": {
-                                "type": "string"
-                              },
-                              "type": "object"
-                            },
-                            "version": {
-                              "const": 3,
-                              "type": "number"
-                            }
-                          },
-                          "required": [
-                            "version",
-                            "kind",
-                            "slots"
-                          ],
-                          "type": "object"
-                        }
-                      ]
-                    },
-                    "props": {
-                      "additionalProperties": {},
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "zPlane": {
-                      "enum": [
-                        "front",
-                        "behind-subject"
-                      ],
-                      "type": "string"
-                    }
-                  },
-                  "required": [
-                    "kind",
-                    "componentId",
-                    "props",
-                    "execution",
-                    "placement"
-                  ],
-                  "type": "object"
-                },
-                {
-                  "additionalProperties": false,
-                  "properties": {
-                    "anchor": {
-                      "additionalProperties": false,
-                      "properties": {
-                        "space": {
-                          "const": "scene",
-                          "type": "string"
-                        },
-                        "x": {
-                          "maximum": 1,
-                          "minimum": 0,
-                          "type": "number"
-                        },
-                        "y": {
-                          "maximum": 1,
-                          "minimum": 0,
-                          "type": "number"
-                        }
-                      },
-                      "required": [
-                        "space",
-                        "x",
-                        "y"
-                      ],
-                      "type": "object"
-                    },
-                    "kind": {
-                      "const": "overlay",
-                      "type": "string"
-                    },
-                    "parallax": {
-                      "maximum": 0.3,
-                      "minimum": -0.3,
-                      "type": "number"
-                    },
-                    "params": {
-                      "additionalProperties": {},
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "primitiveId": {
-                      "minLength": 1,
-                      "pattern": "^(?!custom$)",
-                      "type": "string"
-                    },
-                    "zPlane": {
-                      "enum": [
-                        "front",
-                        "behind-subject"
-                      ],
-                      "type": "string"
-                    }
-                  },
-                  "required": [
-                    "kind",
-                    "primitiveId",
-                    "params"
-                  ],
-                  "type": "object"
-                },
-                {
-                  "additionalProperties": false,
-                  "properties": {
-                    "component": {
-                      "additionalProperties": false,
-                      "properties": {
-                        "assets": {
-                          "additionalProperties": {
-                            "minLength": 1,
-                            "type": "string"
-                          },
-                          "propertyNames": {
-                            "type": "string"
-                          },
-                          "type": "object"
-                        },
-                        "componentId": {
-                          "maxLength": 256,
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "mediaBindings": {
-                          "additionalProperties": {
-                            "items": {
-                              "maxLength": 128,
-                              "minLength": 1,
-                              "type": "string"
-                            },
-                            "type": "array"
-                          },
-                          "propertyNames": {
-                            "type": "string"
-                          },
-                          "type": "object"
-                        },
-                        "params": {
-                          "additionalProperties": {
-                            "$ref": "#/$defs/__schema1"
-                          },
-                          "propertyNames": {
-                            "type": "string"
-                          },
-                          "type": "object"
-                        },
-                        "seed": {
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "sourceVersionId": {
-                          "pattern": "^[a-f0-9]{64}$",
-                          "type": "string"
-                        },
-                        "version": {
-                          "const": 3,
-                          "type": "number"
-                        }
-                      },
-                      "required": [
-                        "version",
-                        "componentId",
-                        "sourceVersionId",
-                        "params",
-                        "seed"
-                      ],
-                      "type": "object"
-                    },
-                    "kind": {
-                      "const": "effect",
-                      "type": "string"
-                    },
-                    "params": {
-                      "additionalProperties": {},
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "primitiveId": {
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "targetTrackIds": {
-                      "items": {
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "minItems": 1,
-                      "type": "array"
-                    },
-                    "wrapperOrder": {
-                      "maximum": 9007199254740991,
-                      "minimum": 0,
-                      "type": "integer"
-                    }
-                  },
-                  "required": [
-                    "kind"
-                  ],
-                  "type": "object"
-                },
-                {
-                  "additionalProperties": false,
-                  "properties": {
-                    "html": {
-                      "description": "Your card's HTML — rendered VERBATIM as the graphic (shell motion via applyMotionPreset in a FOLLOWING call). CANVAS CONTRACT: the card renders in a viewport equal to the composition format's pixel frame (1080×1920 at 9:16 fhd); the root is NOT auto-pinned — declare explicit width/height matching the frame (box-sizing:border-box) and anchor content with flex/grid; position:absolute;inset:0 on the root does NOT fill the frame; for edge-to-edge backgrounds add an inner absolutely-positioned layer with generous negative inset. Overlay compositing applies a ~92% safe-area inset — keep critical copy away from the extreme edges. FONTS: name a family from GET /v1/fonts (list_render_fonts) — the renderer loads those faces for the card and waits for them, so `font-family: Inter` draws Inter. `@import` and remote font files are REFUSED: the card renders with no network. A family that is not on that list has no bytes behind it and the browser falls back, so end any stack with a generic (`Inter, sans-serif`) rather than relying on a system face being present.",
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "kind": {
-                      "const": "card",
-                      "type": "string"
-                    },
-                    "tokens": {
-                      "additionalProperties": {
-                        "type": "string"
-                      },
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "zPlane": {
-                      "const": "front",
-                      "type": "string"
-                    }
-                  },
-                  "required": [
-                    "kind",
-                    "html"
-                  ],
-                  "type": "object"
-                }
-              ]
-            },
-            "startTime": {
-              "description": "Timeline start (seconds).",
-              "minimum": 0,
-              "type": "number"
-            },
-            "transitionIn": {
-              "additionalProperties": false,
-              "properties": {
-                "component": {
-                  "additionalProperties": false,
-                  "properties": {
-                    "assets": {
-                      "additionalProperties": {
-                        "minLength": 1,
-                        "type": "string"
-                      },
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "componentId": {
-                      "maxLength": 256,
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "mediaBindings": {
-                      "additionalProperties": {
-                        "items": {
-                          "maxLength": 128,
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "type": "array"
-                      },
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "params": {
-                      "additionalProperties": {
-                        "$ref": "#/$defs/__schema1"
-                      },
-                      "propertyNames": {
-                        "type": "string"
-                      },
-                      "type": "object"
-                    },
-                    "seed": {
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "sourceVersionId": {
-                      "pattern": "^[a-f0-9]{64}$",
-                      "type": "string"
-                    },
-                    "version": {
-                      "const": 3,
-                      "type": "number"
-                    }
-                  },
-                  "required": [
-                    "version",
-                    "componentId",
-                    "sourceVersionId",
-                    "params",
-                    "seed"
-                  ],
-                  "type": "object"
-                },
-                "duration": {
-                  "exclusiveMinimum": 0,
-                  "type": "number"
-                },
-                "fromClipId": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "handlePolicy": {
-                  "const": "outgoing-overrun-at-cut-v1",
-                  "type": "string"
-                },
-                "id": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "toClipId": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "type": {
-                  "minLength": 1,
-                  "type": "string"
-                }
-              },
-              "required": [
-                "type",
-                "duration"
-              ],
-              "type": "object"
-            }
-          },
-          "required": [
-            "id",
-            "startTime",
-            "duration",
-            "source"
-          ],
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "type": {
-        "const": "loadOverlays",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clips"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Add a timeline marker (a named time point/range; carry extensions in `metadata`).",
-    "properties": {
-      "marker": {
-        "additionalProperties": false,
-        "properties": {
-          "endTime": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "id": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "kind": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "metadata": {
-            "additionalProperties": {},
-            "propertyNames": {
-              "type": "string"
-            },
-            "type": "object"
-          },
-          "name": {
-            "type": "string"
-          },
-          "startTime": {
-            "minimum": 0,
-            "type": "number"
-          }
-        },
-        "required": [
-          "id",
-          "startTime",
-          "kind"
-        ],
-        "type": "object"
-      },
-      "type": {
-        "const": "addMarker",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "marker"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Remove a marker by id.",
-    "properties": {
-      "markerId": {
-        "type": "string"
-      },
-      "type": {
-        "const": "removeMarker",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "markerId"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Patch a marker's fields by id (partial merge).",
-    "properties": {
-      "markerId": {
-        "type": "string"
-      },
-      "type": {
-        "const": "updateMarker",
-        "type": "string"
-      },
-      "updates": {
-        "additionalProperties": false,
-        "properties": {
-          "endTime": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "id": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "kind": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "metadata": {
-            "additionalProperties": {},
-            "propertyNames": {
-              "type": "string"
-            },
-            "type": "object"
-          },
-          "name": {
-            "type": "string"
-          },
-          "startTime": {
-            "minimum": 0,
-            "type": "number"
-          }
-        },
-        "type": "object"
-      }
-    },
-    "required": [
-      "type",
-      "markerId",
-      "updates"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Set (or CLEAR, with `segments: null`) the camera/reframe channel on a MEDIA clip — the time-aligned source→output viewport (focus, zoom, ease, bias). This is the PREFERRED way to author reframing; do NOT reframe via a whole-source `clip.update` patch. Segments tile the clip's duration.",
-    "properties": {
-      "clipId": {
-        "type": "string"
-      },
-      "segments": {
-        "anyOf": [
-          {
-            "items": {
-              "additionalProperties": false,
-              "properties": {
-                "bias": {
-                  "additionalProperties": false,
-                  "description": "Optional FINE framing nudge off the focus center, source-normalized in [−0.3, 0.3]. A small correction (headroom, rule-of-thirds), NOT a reframe — use `focus`/`zoom` for the actual shot. Omit (treated as 0) to sit dead-center on the focus.",
-                  "properties": {
-                    "x": {
-                      "description": "Horizontal nudge, source-normalized (+ = right).",
-                      "maximum": 0.3,
-                      "minimum": -0.3,
-                      "type": "number"
-                    },
-                    "y": {
-                      "description": "Vertical nudge, source-normalized (+ = down).",
-                      "maximum": 0.3,
-                      "minimum": -0.3,
-                      "type": "number"
-                    }
-                  },
-                  "required": [
-                    "x",
-                    "y"
-                  ],
-                  "type": "object"
-                },
-                "ease": {
-                  "additionalProperties": false,
-                  "description": "Zoom/center ramp DURATIONS in SECONDS at this segment's edges — NOT a unitless 0–1 curve. ~0.3–0.6s reads as a snappy push; >1s reads sluggish. Keep `in` + `out` ≤ the segment's duration (endSec − startSec): the two edges share the span, so to ramp across the WHOLE segment set one edge to the full duration and the other to 0. Omit for an instant cut to this framing.",
-                  "properties": {
-                    "in": {
-                      "description": "Ease-IN ramp DURATION in seconds at the segment START.",
-                      "minimum": 0,
-                      "type": "number"
-                    },
-                    "out": {
-                      "description": "Ease-OUT ramp DURATION in seconds at the segment END.",
-                      "minimum": 0,
-                      "type": "number"
-                    }
-                  },
-                  "required": [
-                    "in",
-                    "out"
-                  ],
-                  "type": "object"
-                },
-                "endSec": {
-                  "description": "Segment END in seconds, clip-relative. The span (endSec − startSec) is this segment's duration — the window `ease` ramps over.",
-                  "exclusiveMinimum": 0,
-                  "type": "number"
-                },
-                "focus": {
-                  "anyOf": [
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "mode": {
-                          "const": "frame-center",
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "mode"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "mode": {
-                          "const": "point",
-                          "type": "string"
-                        },
-                        "x": {
-                          "maximum": 1,
-                          "minimum": 0,
-                          "type": "number"
-                        },
-                        "y": {
-                          "maximum": 1,
-                          "minimum": 0,
-                          "type": "number"
-                        }
-                      },
-                      "required": [
-                        "mode",
-                        "x",
-                        "y"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "faceId": {
-                          "minLength": 1,
-                          "type": "string"
-                        },
-                        "mode": {
-                          "const": "face",
-                          "type": "string"
-                        },
-                        "shotScale": {
-                          "enum": [
-                            "close",
-                            "standard",
-                            "wide"
-                          ],
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "mode",
-                        "faceId"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "mode": {
-                          "const": "all-faces",
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "mode"
-                      ],
-                      "type": "object"
-                    },
-                    {
-                      "additionalProperties": false,
-                      "properties": {
-                        "mode": {
-                          "const": "active-speaker",
-                          "type": "string"
-                        }
-                      },
-                      "required": [
-                        "mode"
-                      ],
-                      "type": "object"
-                    }
-                  ],
-                  "description": "WHO/WHAT the camera tracks this segment (the reframe center), selected by `mode`: `frame-center` = no tracking, hold the geometric center (static/graphic footage, or a pure zoom); `point` = lock to a fixed source-normalized {x,y} (a non-moving on-screen element); `face` = track a detected face by `faceId` (from get_media_context), with optional `shotScale` close|standard|wide for tightness; `all-faces` = frame the bounding box of every detected face (group/ensemble shots); `active-speaker` = follow whoever is speaking (diarized talking-head / podcast). Pick by what the beat is about; pair with `zoom` for how tight."
-                },
-                "intent": {
-                  "description": "Optional editorial LABEL for diff/log readability (e.g. 'speaker-tight', 'wide-context'). Cosmetic — NOT honored by the derive math and excluded from the variant cache key.",
-                  "type": "string"
-                },
-                "startSec": {
-                  "description": "Segment START in seconds, clip-relative. Segments tile the clip's duration in order.",
-                  "minimum": 0,
-                  "type": "number"
-                },
-                "zoom": {
-                  "description": "How TIGHT the framing is — the fraction of the source the output viewport shows. <1 punches IN (a smaller source fraction, magnified to fill the frame); 1 = the full frame (no crop). ~0.6–0.8 is a moderate push-in, ~0.5 a tight close-up, 0.1 the maximum zoom. There is NO zoom-OUT past the full frame (max 1). Omit for the full frame. MUTUALLY EXCLUSIVE with `focus.shotScale` — a face-tracked shot is sized EITHER by the editorial scale (shotScale, which the bake calibrates to the detected face) OR by an explicit zoom, never both. A segment carrying both is REJECTED: shotScale wins at bake time and the zoom would be silently discarded.",
-                  "maximum": 1,
-                  "minimum": 0.1,
-                  "type": "number"
-                }
-              },
-              "required": [
-                "startSec",
-                "endSec",
-                "focus"
-              ],
-              "type": "object"
-            },
-            "type": "array"
-          },
-          {
-            "type": "null"
-          }
-        ]
-      },
-      "type": {
-        "const": "setCropIntents",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId",
-      "segments"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Set (or CLEAR, with `effects: []`) a clip's EFFECT channel — the registered effect primitives stacked onto that clip, each `{ primitiveId, params? }`. WHOLESALE: the array REPLACES the clip's current effects, so send the full stack (read the clip first to add one). This is the ONLY way to change effects on an existing clip — do NOT reach for a `clip.update` patch, whose top-level merge is the source-clobbering footgun documented above.",
-    "properties": {
-      "clipId": {
-        "type": "string"
-      },
-      "effects": {
-        "items": {
-          "additionalProperties": false,
-          "properties": {
-            "component": {
-              "additionalProperties": false,
-              "properties": {
-                "assets": {
-                  "additionalProperties": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "propertyNames": {
-                    "type": "string"
-                  },
-                  "type": "object"
-                },
-                "componentId": {
-                  "maxLength": 256,
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "mediaBindings": {
-                  "additionalProperties": {
-                    "items": {
-                      "maxLength": 128,
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "type": "array"
-                  },
-                  "propertyNames": {
-                    "type": "string"
-                  },
-                  "type": "object"
-                },
-                "params": {
-                  "additionalProperties": {
-                    "$ref": "#/$defs/__schema1"
-                  },
-                  "propertyNames": {
-                    "type": "string"
-                  },
-                  "type": "object"
-                },
-                "seed": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "sourceVersionId": {
-                  "pattern": "^[a-f0-9]{64}$",
-                  "type": "string"
-                },
-                "version": {
-                  "const": 3,
-                  "type": "number"
-                }
-              },
-              "required": [
-                "version",
-                "componentId",
-                "sourceVersionId",
-                "params",
-                "seed"
-              ],
-              "type": "object"
-            },
-            "id": {
-              "minLength": 1,
-              "type": "string"
-            },
-            "params": {
-              "additionalProperties": {},
-              "propertyNames": {
-                "type": "string"
-              },
-              "type": "object"
-            },
-            "primitiveId": {
-              "minLength": 1,
-              "type": "string"
-            },
-            "window": {
-              "additionalProperties": false,
-              "properties": {
-                "duration": {
-                  "exclusiveMinimum": 0,
-                  "type": "number"
-                },
-                "startTime": {
-                  "minimum": 0,
-                  "type": "number"
-                }
-              },
-              "required": [
-                "startTime",
-                "duration"
-              ],
-              "type": "object"
-            }
-          },
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "type": {
-        "const": "setEffects",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId",
-      "effects"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Merge style overrides (font/color/position/emphasis) onto the composition's caption layer. Partial — omitted fields keep their current value; creates the caption container if absent.",
-    "properties": {
-      "style": {
-        "additionalProperties": false,
-        "properties": {
-          "annotationColor": {
-            "type": "string"
-          },
-          "annotationStrokeWidth": {
-            "description": "Annotation stroke width in its 100×100 SVG coordinate system; default 4.",
-            "maximum": 12,
-            "minimum": 0.5,
-            "type": "number"
-          },
-          "annotationTexture": {
-            "description": "Native annotation stroke finish; default clean.",
-            "enum": [
-              "clean",
-              "pencil"
-            ],
-            "type": "string"
-          },
-          "backgroundColor": {
-            "type": "string"
-          },
-          "color": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "emphasisColor": {
-            "type": "string"
-          },
-          "emphasisFontFamily": {
-            "type": "string"
-          },
-          "emphasisFontStyle": {
-            "enum": [
-              "normal",
-              "italic"
-            ],
-            "type": "string"
-          },
-          "emphasisFontWeight": {
-            "maximum": 900,
-            "minimum": 100,
-            "type": "integer"
-          },
-          "emphasisGradient": {
-            "type": "string"
-          },
-          "emphasisLetterSpacing": {
-            "type": "number"
-          },
-          "emphasisPlate": {
-            "type": "boolean"
-          },
-          "emphasisPlateAltColor": {
-            "type": "string"
-          },
-          "emphasisPlateAltTextColor": {
-            "type": "string"
-          },
-          "emphasisPlateColor": {
-            "type": "string"
-          },
-          "emphasisPlatePadX": {
-            "type": "number"
-          },
-          "emphasisPlatePadY": {
-            "type": "number"
-          },
-          "emphasisPlateRadius": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "emphasisPlateReveal": {
-            "description": "Grow a shared emphasis plate as saved words appear while reserving its final layout width.",
-            "type": "boolean"
-          },
-          "emphasisPlateTextColor": {
-            "type": "string"
-          },
-          "emphasisScale": {
-            "exclusiveMinimum": 0,
-            "type": "number"
-          },
-          "emphasisTextTransform": {
-            "enum": [
-              "none",
-              "uppercase",
-              "capitalize"
-            ],
-            "type": "string"
-          },
-          "entrance": {
-            "enum": [
-              "none",
-              "fade",
-              "word-pop",
-              "stagger-up"
-            ],
-            "type": "string"
-          },
-          "entranceMs": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "entranceStaggerMs": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "exitMs": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "fontFamily": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "fontSize": {
-            "description": "Font size as % of composition height (1-15, default 5). NOT px.",
-            "maximum": 15,
-            "minimum": 1,
-            "type": "number"
-          },
-          "fontWeight": {
-            "maximum": 900,
-            "minimum": 100,
-            "type": "integer"
-          },
-          "highlightColor": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "letterSpacing": {
-            "description": "Base caption glyph spacing in pixels.",
-            "maximum": 20,
-            "minimum": -5,
-            "type": "number"
-          },
-          "lineGapEm": {
-            "description": "Gap between caption lines as a multiple of base font size; default 0.25.",
-            "maximum": 2,
-            "minimum": 0,
-            "type": "number"
-          },
-          "maxWidthPercent": {
-            "exclusiveMinimum": 0,
-            "maximum": 100,
-            "type": "number"
-          },
-          "plate": {
-            "enum": [
-              "glass",
-              "solid",
-              "none"
-            ],
-            "type": "string"
-          },
-          "position": {
-            "enum": [
-              "top",
-              "center",
-              "bottom"
-            ],
-            "type": "string"
-          },
-          "region": {
-            "additionalProperties": false,
-            "description": "Optional caption layout box {x,y,w,h} in normalized output-frame coordinates. Overrides position; text starts at its top edge and wraps/pages within its width and height.",
-            "properties": {
-              "h": {
-                "exclusiveMinimum": 0,
-                "maximum": 1,
-                "type": "number"
-              },
-              "w": {
-                "exclusiveMinimum": 0,
-                "maximum": 1,
-                "type": "number"
-              },
-              "x": {
-                "maximum": 1,
-                "minimum": 0,
-                "type": "number"
-              },
-              "y": {
-                "maximum": 1,
-                "minimum": 0,
-                "type": "number"
-              }
-            },
-            "required": [
-              "x",
-              "y",
-              "w",
-              "h"
-            ],
-            "type": "object"
-          },
-          "textTransform": {
-            "enum": [
-              "none",
-              "uppercase",
-              "capitalize"
-            ],
-            "type": "string"
-          },
-          "wordGapEm": {
-            "description": "Gap between caption runs as a multiple of base font size; default 0.35.",
-            "maximum": 2,
-            "minimum": 0,
-            "type": "number"
-          }
-        },
-        "type": "object"
-      },
-      "type": {
-        "const": "setCaptionStyle",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "style"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Replace native caption placements without changing transcript words or timings. Each layout references a half-open word-index range in one saved segment; a one-word range is valid. region places that group independently, optional bounded scale/rotation/style changes its look, and holdThroughWordIndex keeps it visible through a later saved word in the same segment. All words in a placed range occupy one page; rendering refuses a range that cannot fit its box, so enlarge region or split the range. The box reserves horizontal space of 1.6 font sizes and vertical space of 0.8 font sizes for padding, with at most three lines. Unreferenced words keep the default caption layout. Word ranges must not overlap. Reapply after caption regeneration or timeline cuts.",
-    "properties": {
-      "layouts": {
-        "items": {
-          "additionalProperties": false,
-          "properties": {
-            "holdThroughWordIndex": {
-              "description": "Inclusive saved-word index in this segment. The layout stays visible until that word ends.",
-              "maximum": 9007199254740991,
-              "minimum": 0,
-              "type": "integer"
-            },
-            "region": {
-              "additionalProperties": false,
-              "properties": {
-                "h": {
-                  "exclusiveMinimum": 0,
-                  "maximum": 1,
-                  "type": "number"
-                },
-                "w": {
-                  "exclusiveMinimum": 0,
-                  "maximum": 1,
-                  "type": "number"
-                },
-                "x": {
-                  "maximum": 1,
-                  "minimum": 0,
-                  "type": "number"
-                },
-                "y": {
-                  "maximum": 1,
-                  "minimum": 0,
-                  "type": "number"
-                }
-              },
-              "required": [
-                "x",
-                "y",
-                "w",
-                "h"
-              ],
-              "type": "object"
-            },
-            "rotation": {
-              "maximum": 45,
-              "minimum": -45,
-              "type": "number"
-            },
-            "scale": {
-              "maximum": 4,
-              "minimum": 0.25,
-              "type": "number"
-            },
-            "segmentIndex": {
-              "maximum": 9007199254740991,
-              "minimum": 0,
-              "type": "integer"
-            },
-            "style": {
-              "additionalProperties": false,
-              "properties": {
-                "annotationColor": {
-                  "type": "string"
-                },
-                "annotationStrokeWidth": {
-                  "description": "Annotation stroke width in its 100×100 SVG coordinate system; default 4.",
-                  "maximum": 12,
-                  "minimum": 0.5,
-                  "type": "number"
-                },
-                "annotationTexture": {
-                  "description": "Native annotation stroke finish; default clean.",
-                  "enum": [
-                    "clean",
-                    "pencil"
-                  ],
-                  "type": "string"
-                },
-                "backgroundColor": {
-                  "type": "string"
-                },
-                "color": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "emphasisColor": {
-                  "type": "string"
-                },
-                "emphasisFontFamily": {
-                  "type": "string"
-                },
-                "emphasisFontStyle": {
-                  "enum": [
-                    "normal",
-                    "italic"
-                  ],
-                  "type": "string"
-                },
-                "emphasisFontWeight": {
-                  "maximum": 900,
-                  "minimum": 100,
-                  "type": "integer"
-                },
-                "emphasisLetterSpacing": {
-                  "type": "number"
-                },
-                "emphasisPlate": {
-                  "type": "boolean"
-                },
-                "emphasisPlateAltColor": {
-                  "type": "string"
-                },
-                "emphasisPlateAltTextColor": {
-                  "type": "string"
-                },
-                "emphasisPlateColor": {
-                  "type": "string"
-                },
-                "emphasisPlatePadX": {
-                  "type": "number"
-                },
-                "emphasisPlatePadY": {
-                  "type": "number"
-                },
-                "emphasisPlateRadius": {
-                  "minimum": 0,
-                  "type": "number"
-                },
-                "emphasisPlateReveal": {
-                  "description": "Grow a shared emphasis plate as saved words appear while reserving its final layout width.",
-                  "type": "boolean"
-                },
-                "emphasisPlateTextColor": {
-                  "type": "string"
-                },
-                "emphasisScale": {
-                  "exclusiveMinimum": 0,
-                  "type": "number"
-                },
-                "emphasisTextTransform": {
-                  "enum": [
-                    "none",
-                    "uppercase",
-                    "capitalize"
-                  ],
-                  "type": "string"
-                },
-                "entrance": {
-                  "enum": [
-                    "none",
-                    "fade",
-                    "word-pop",
-                    "stagger-up"
-                  ],
-                  "type": "string"
-                },
-                "entranceMs": {
-                  "minimum": 0,
-                  "type": "number"
-                },
-                "entranceStaggerMs": {
-                  "minimum": 0,
-                  "type": "number"
-                },
-                "exitMs": {
-                  "minimum": 0,
-                  "type": "number"
-                },
-                "fontFamily": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "fontSize": {
-                  "description": "Font size as % of composition height (1-15, default 5). NOT px.",
-                  "maximum": 15,
-                  "minimum": 1,
-                  "type": "number"
-                },
-                "fontWeight": {
-                  "maximum": 900,
-                  "minimum": 100,
-                  "type": "integer"
-                },
-                "highlightColor": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "letterSpacing": {
-                  "description": "Base caption glyph spacing in pixels.",
-                  "maximum": 20,
-                  "minimum": -5,
-                  "type": "number"
-                },
-                "lineGapEm": {
-                  "description": "Gap between caption lines as a multiple of base font size; default 0.25.",
-                  "maximum": 2,
-                  "minimum": 0,
-                  "type": "number"
-                },
-                "plate": {
-                  "enum": [
-                    "glass",
-                    "solid",
-                    "none"
-                  ],
-                  "type": "string"
-                },
-                "textTransform": {
-                  "enum": [
-                    "none",
-                    "uppercase",
-                    "capitalize"
-                  ],
-                  "type": "string"
-                },
-                "wordGapEm": {
-                  "description": "Gap between caption runs as a multiple of base font size; default 0.35.",
-                  "maximum": 2,
-                  "minimum": 0,
-                  "type": "number"
-                }
-              },
-              "type": "object"
-            },
-            "wordEndIndex": {
-              "description": "Exclusive word index in the saved caption segment.",
-              "exclusiveMinimum": 0,
-              "maximum": 9007199254740991,
-              "type": "integer"
-            },
-            "wordMarks": {
-              "items": {
-                "additionalProperties": false,
-                "properties": {
-                  "annotate": {
-                    "anyOf": [
-                      {
-                        "enum": [
-                          "circle",
-                          "underline"
-                        ],
-                        "type": "string"
-                      },
-                      {
-                        "type": "null"
-                      }
-                    ]
-                  },
-                  "emphasis": {
-                    "type": "boolean"
-                  },
-                  "wordIndex": {
-                    "maximum": 9007199254740991,
-                    "minimum": 0,
-                    "type": "integer"
-                  }
-                },
-                "required": [
-                  "wordIndex"
-                ],
-                "type": "object"
-              },
-              "type": "array"
-            },
-            "wordStartIndex": {
-              "maximum": 9007199254740991,
-              "minimum": 0,
-              "type": "integer"
-            }
-          },
-          "required": [
-            "segmentIndex",
-            "wordStartIndex",
-            "wordEndIndex",
-            "region"
-          ],
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "type": {
-        "const": "setCaptionLayouts",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "layouts"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Set the caption compositing plane. Use `behind-subject` to place captions behind the segmented foreground subject; use `front` for conventional captions above all video layers.",
-    "properties": {
-      "type": {
-        "const": "setCaptionDepth",
-        "type": "string"
-      },
-      "zPlane": {
-        "enum": [
-          "front",
-          "behind-subject"
-        ],
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "zPlane"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Replace the caption SEGMENTS wholesale — author the word-timed caption layer directly (each segment = one sentence/page of `words` with timeline-ms `startMs`/`endMs`, optional `emphasis`). This is how a client with its OWN word timings (e.g. a generated VO take) gets word-synced captions without a source transcript; the compose lane's transcript slice writes the same layer. `style`, when given, merges with setCaptionStyle semantics; an omitted style keeps the existing one. Renderer paginates within a segment and never pools words across two — keep segments sentence-bounded.",
-    "properties": {
-      "segments": {
-        "items": {
-          "additionalProperties": false,
-          "properties": {
-            "words": {
-              "items": {
-                "additionalProperties": false,
-                "properties": {
-                  "annotate": {
-                    "enum": [
-                      "circle",
-                      "underline"
-                    ],
-                    "type": "string"
-                  },
-                  "emphasis": {
-                    "type": "boolean"
-                  },
-                  "endMs": {
-                    "description": "Word end on the composition timeline, in milliseconds.",
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "startMs": {
-                    "description": "Word start on the composition timeline, in milliseconds.",
-                    "minimum": 0,
-                    "type": "number"
-                  },
-                  "text": {
-                    "minLength": 1,
-                    "type": "string"
-                  }
-                },
-                "required": [
-                  "text",
-                  "startMs",
-                  "endMs"
-                ],
-                "type": "object"
-              },
-              "type": "array"
-            }
-          },
-          "required": [
-            "words"
-          ],
-          "type": "object"
-        },
-        "type": "array"
-      },
-      "style": {
-        "additionalProperties": false,
-        "properties": {
-          "annotationColor": {
-            "type": "string"
-          },
-          "annotationStrokeWidth": {
-            "description": "Annotation stroke width in its 100×100 SVG coordinate system; default 4.",
-            "maximum": 12,
-            "minimum": 0.5,
-            "type": "number"
-          },
-          "annotationTexture": {
-            "description": "Native annotation stroke finish; default clean.",
-            "enum": [
-              "clean",
-              "pencil"
-            ],
-            "type": "string"
-          },
-          "backgroundColor": {
-            "type": "string"
-          },
-          "color": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "emphasisColor": {
-            "type": "string"
-          },
-          "emphasisFontFamily": {
-            "type": "string"
-          },
-          "emphasisFontStyle": {
-            "enum": [
-              "normal",
-              "italic"
-            ],
-            "type": "string"
-          },
-          "emphasisFontWeight": {
-            "maximum": 900,
-            "minimum": 100,
-            "type": "integer"
-          },
-          "emphasisGradient": {
-            "type": "string"
-          },
-          "emphasisLetterSpacing": {
-            "type": "number"
-          },
-          "emphasisPlate": {
-            "type": "boolean"
-          },
-          "emphasisPlateAltColor": {
-            "type": "string"
-          },
-          "emphasisPlateAltTextColor": {
-            "type": "string"
-          },
-          "emphasisPlateColor": {
-            "type": "string"
-          },
-          "emphasisPlatePadX": {
-            "type": "number"
-          },
-          "emphasisPlatePadY": {
-            "type": "number"
-          },
-          "emphasisPlateRadius": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "emphasisPlateReveal": {
-            "description": "Grow a shared emphasis plate as saved words appear while reserving its final layout width.",
-            "type": "boolean"
-          },
-          "emphasisPlateTextColor": {
-            "type": "string"
-          },
-          "emphasisScale": {
-            "exclusiveMinimum": 0,
-            "type": "number"
-          },
-          "emphasisTextTransform": {
-            "enum": [
-              "none",
-              "uppercase",
-              "capitalize"
-            ],
-            "type": "string"
-          },
-          "entrance": {
-            "enum": [
-              "none",
-              "fade",
-              "word-pop",
-              "stagger-up"
-            ],
-            "type": "string"
-          },
-          "entranceMs": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "entranceStaggerMs": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "exitMs": {
-            "minimum": 0,
-            "type": "number"
-          },
-          "fontFamily": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "fontSize": {
-            "description": "Font size as % of composition height (1-15, default 5). NOT px.",
-            "maximum": 15,
-            "minimum": 1,
-            "type": "number"
-          },
-          "fontWeight": {
-            "maximum": 900,
-            "minimum": 100,
-            "type": "integer"
-          },
-          "highlightColor": {
-            "minLength": 1,
-            "type": "string"
-          },
-          "letterSpacing": {
-            "description": "Base caption glyph spacing in pixels.",
-            "maximum": 20,
-            "minimum": -5,
-            "type": "number"
-          },
-          "lineGapEm": {
-            "description": "Gap between caption lines as a multiple of base font size; default 0.25.",
-            "maximum": 2,
-            "minimum": 0,
-            "type": "number"
-          },
-          "maxWidthPercent": {
-            "exclusiveMinimum": 0,
-            "maximum": 100,
-            "type": "number"
-          },
-          "plate": {
-            "enum": [
-              "glass",
-              "solid",
-              "none"
-            ],
-            "type": "string"
-          },
-          "position": {
-            "enum": [
-              "top",
-              "center",
-              "bottom"
-            ],
-            "type": "string"
-          },
-          "region": {
-            "additionalProperties": false,
-            "description": "Optional caption layout box {x,y,w,h} in normalized output-frame coordinates. Overrides position; text starts at its top edge and wraps/pages within its width and height.",
-            "properties": {
-              "h": {
-                "exclusiveMinimum": 0,
-                "maximum": 1,
-                "type": "number"
-              },
-              "w": {
-                "exclusiveMinimum": 0,
-                "maximum": 1,
-                "type": "number"
-              },
-              "x": {
-                "maximum": 1,
-                "minimum": 0,
-                "type": "number"
-              },
-              "y": {
-                "maximum": 1,
-                "minimum": 0,
-                "type": "number"
-              }
-            },
-            "required": [
-              "x",
-              "y",
-              "w",
-              "h"
-            ],
-            "type": "object"
-          },
-          "textTransform": {
-            "enum": [
-              "none",
-              "uppercase",
-              "capitalize"
-            ],
-            "type": "string"
-          },
-          "wordGapEm": {
-            "description": "Gap between caption runs as a multiple of base font size; default 0.35.",
-            "maximum": 2,
-            "minimum": 0,
-            "type": "number"
-          }
-        },
-        "type": "object"
-      },
-      "type": {
-        "const": "setCaptions",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "segments"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Attach caption CONTENT from the media's cached transcript — no pasting words. ROUTE-MATERIALIZED like applyMotionPreset/materializeGrid: the server slices the word-timed transcript to `window` (source seconds; absent = the whole media), rebases times, sentence-splits into segments, and applies it as `setCaptions`. 422 media_no_transcript when the media has no transcript or no words in the window. For your OWN word timings use setCaptions directly. For edited multi-clip timelines, use captions.fromComposition after saving the edits; that operation projects all selected track clips, trims, exclusions, and placements.",
-    "properties": {
-      "mediaId": {
-        "minLength": 1,
-        "type": "string"
-      },
-      "type": {
-        "const": "captions.fromTranscript",
-        "type": "string"
-      },
-      "window": {
-        "additionalProperties": false,
-        "properties": {
-          "endSec": {
-            "exclusiveMinimum": 0,
-            "type": "number"
-          },
-          "startSec": {
-            "minimum": 0,
-            "type": "number"
-          }
-        },
-        "required": [
-          "startSec",
-          "endSec"
-        ],
-        "type": "object"
-      }
-    },
-    "required": [
-      "type",
-      "mediaId"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Snapshot word-timed captions from the SAVED edits on one explicit enabled video or audio track. The host reads each source media transcript, projects words through clip trim, excluded ranges and placement, then replaces the caption segments. This is route-materialized to setCaptions; call it AFTER persisting clip edits and call it again when those edits change. The existing caption style and depth are preserved. Missing transcripts, unsupported clips, inconsistent clip durations, and overlapping audible clips fail loud. Playback rate scales source word times and playable duration on both audio and video tracks.",
-    "properties": {
-      "trackId": {
-        "minLength": 1,
-        "type": "string"
-      },
-      "type": {
-        "const": "captions.fromComposition",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "trackId"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Shell a STATIC `card` clip with a frame-driven MOTION preset — the public card-shelling op (the layout renders VERBATIM; only the container animates in/out). The server wraps the card in the chosen `preset` (fade-up / slide-in-left / slide-in-right / scale-pop / stagger-reveal), transpiles it, mints it as a LIVE component, and swaps the clip source to that component (the bakeless live lane — no box). `params` tunes timing (`enterMs`/`exitMs`, `staggerMs` for stagger-reveal). The target must be a static card (components already carry motion; library overlays already move); re-run overwrites idempotently ONLY while the target is still a card (an uncompilable shell); once shelled, the clip is a COMPONENT — to change its motion, remove and re-add the card, then re-shell. Honored under `dry_run` (validates preset + target without transpiling or persisting). ORDERING: the preset resolves its target against the PERSISTED composition — a card added in the SAME batch is not yet visible to it. Persist the clip.add batch first, then shell in a following call.",
-    "properties": {
-      "clipId": {
-        "type": "string"
-      },
-      "params": {
-        "additionalProperties": false,
-        "properties": {
-          "enterMs": {
-            "type": "number"
-          },
-          "exitMs": {
-            "type": "number"
-          },
-          "staggerMs": {
-            "type": "number"
-          }
-        },
-        "type": "object"
-      },
-      "preset": {
-        "type": "string"
-      },
-      "type": {
-        "const": "applyMotionPreset",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId",
-      "preset"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Materialize a clip's SOURCE-media temporal GRID as timeline markers — the rhythm authority you cut to. `grid:\"beat\"` reads a MUSIC bed's beat map (get_media_context.beatGrid), `grid:\"word\"` the VO word onsets (wordGrid); each grid point is projected from media time to TIMELINE time through the clip's placement (startTime, trim, playbackRate, excludedRanges) and written as a `kind:\"beat\"|\"word\"` marker (`metadata.sourceClipId` set). Points outside the clip's visible window are skipped. Re-running REPLACES the prior markers from the same clip+grid (idempotent). Land cuts and transition MIDPOINTS on the markers (a 0.5s transition starts 0.25s before its marker). `maxMarkers` (default 500, ceiling 2000) — exceeding it fails loud with the count. `grid:\"shot\"` is not yet exposed (shot_grid_unavailable). The target must be a media clip; absent evidence fails loud (grid_unavailable) naming how to get it (declare audioRole:\"music\" at ingest / transcribe).",
-    "properties": {
-      "clipId": {
-        "type": "string"
-      },
-      "grid": {
-        "enum": [
-          "beat",
-          "word",
-          "shot"
-        ],
-        "type": "string"
-      },
-      "maxMarkers": {
-        "exclusiveMinimum": 0,
-        "maximum": 2000,
-        "type": "integer"
-      },
-      "type": {
-        "const": "materializeGrid",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId",
-      "grid"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Set the output format — `aspectRatio` (16:9|9:16|1:1|4:5) plus optional `fps` and `resolution`. Merges: an omitted field keeps the current value.",
-    "properties": {
-      "format": {
-        "additionalProperties": false,
-        "properties": {
-          "aspectRatio": {
-            "enum": [
-              "16:9",
-              "9:16",
-              "1:1",
-              "4:5"
-            ],
-            "type": "string"
-          },
-          "fps": {
-            "anyOf": [
-              {
-                "const": 24,
-                "type": "number"
-              },
-              {
-                "const": 25,
-                "type": "number"
-              },
-              {
-                "const": 30,
-                "type": "number"
-              },
-              {
-                "const": 60,
-                "type": "number"
-              }
-            ]
-          },
-          "resolution": {
-            "enum": [
-              "hd",
-              "fhd",
-              "4k"
-            ],
-            "type": "string"
-          }
-        },
-        "required": [
-          "aspectRatio"
-        ],
-        "type": "object"
-      },
-      "type": {
-        "const": "setFormat",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "format"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Add an EMPTY track of a given family (video|audio|image|overlay|effect). Optional pinned `id`. The new track is appended, so it starts at the BACK: index 0 is the top layer and higher indices are further back (see `reorderTracks`). Track order only ranks clips on the same plane — every overlay draws above the video lane unless its `zPlane` is `behind-subject`, whatever its track index.",
-    "properties": {
-      "id": {
-        "type": "string"
-      },
-      "kind": {
-        "enum": [
-          "video",
-          "audio",
-          "image",
-          "overlay",
-          "effect"
-        ],
-        "type": "string"
-      },
-      "name": {
-        "type": "string"
-      },
-      "type": {
-        "const": "addTrack",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "kind"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Remove a track AND all its clips by id.",
-    "properties": {
-      "trackId": {
-        "type": "string"
-      },
-      "type": {
-        "const": "removeTrack",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "trackId"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Patch a track's `name` / `enabled` by id.",
-    "properties": {
-      "trackId": {
-        "type": "string"
-      },
-      "type": {
-        "const": "updateTrack",
-        "type": "string"
-      },
-      "updates": {
-        "additionalProperties": false,
-        "properties": {
-          "enabled": {
-            "type": "boolean"
-          },
-          "name": {
-            "type": "string"
-          }
-        },
-        "type": "object"
-      }
-    },
-    "required": [
-      "type",
-      "trackId",
-      "updates"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Move a track from one index to another. ORDER: index 0 is the TOP layer, not the bottom — moving a backdrop to index 0 puts it in FRONT of everything and hides the composition. Higher index = further back. PRECEDENCE: track order decides compositing only among clips on the same plane. Overlays are composited in a lane ABOVE the video lane whatever their track index; the one exception is `zPlane:\"behind-subject\"`, which moves the overlay inside its host clip, behind the segmented foreground. So if reordering tracks does not change what you see, the plane split already decided it.",
-    "properties": {
-      "fromIndex": {
-        "type": "number"
-      },
-      "toIndex": {
-        "type": "number"
-      },
-      "type": {
-        "const": "reorderTracks",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "fromIndex",
-      "toIndex"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Move a clip to another SAME-family track, optionally at a new `newStartTime`.",
-    "properties": {
-      "clipId": {
-        "type": "string"
-      },
-      "newStartTime": {
-        "type": "number"
-      },
-      "targetTrackId": {
-        "type": "string"
-      },
-      "type": {
-        "const": "moveClipToTrack",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId",
-      "targetTrackId"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Duplicate a clip by id. Pin `newClipId` to make the copy's id deterministic (required for a clean undo/inverse).",
-    "properties": {
-      "clipId": {
-        "type": "string"
-      },
-      "newClipId": {
-        "type": "string"
-      },
-      "type": {
-        "const": "duplicateClip",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Server-authoritative: delete the [start,end] time window (seconds) and ripple every downstream clip/marker/caption earlier to close the gap.",
-    "properties": {
-      "end": {
-        "type": "number"
-      },
-      "start": {
-        "type": "number"
-      },
-      "type": {
-        "const": "cutAndRipple",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "start",
-      "end"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Server-authoritative: shift everything at/after `time` (seconds) by `amount` seconds (+ opens a gap, − closes one).",
-    "properties": {
-      "amount": {
-        "type": "number"
-      },
-      "time": {
-        "type": "number"
-      },
-      "type": {
-        "const": "ripple",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "time",
-      "amount"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Server-authoritative: exclude a [sourceStart,sourceEnd] span (seconds) of a clip's SOURCE (an internal trim) and ripple downstream — the preferred way to drop a sub-range vs a source patch.",
-    "properties": {
-      "clipId": {
-        "type": "string"
-      },
-      "reason": {
-        "type": "string"
-      },
-      "sourceEnd": {
-        "type": "number"
-      },
-      "sourceStart": {
-        "type": "number"
-      },
-      "type": {
-        "const": "addExcludedRange",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId",
-      "sourceStart",
-      "sourceEnd"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Server-authoritative: remove a clip's previously-added excluded range by index (re-includes that span, ripples downstream).",
-    "properties": {
-      "clipId": {
-        "type": "string"
-      },
-      "rangeIdx": {
-        "type": "number"
-      },
-      "type": {
-        "const": "removeExcludedRange",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "clipId",
-      "rangeIdx"
-    ],
-    "type": "object"
-  },
-  {
-    "additionalProperties": false,
-    "description": "Atomically repin explicit version3 invocations using complete before/after execution references and an exact composition etag. Persistence must canonically admit scoped source hashes, destination input schemas and every resulting target context before applying, including replay/undo. Never infer a latest head, downgrade versions or accept an admitted flag.",
-    "properties": {
-      "changes": {
-        "items": {
-          "additionalProperties": false,
-          "properties": {
-            "after": {
-              "additionalProperties": false,
-              "properties": {
-                "assets": {
-                  "additionalProperties": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "propertyNames": {
-                    "type": "string"
-                  },
-                  "type": "object"
-                },
-                "componentId": {
-                  "maxLength": 256,
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "mediaBindings": {
-                  "additionalProperties": {
-                    "items": {
-                      "maxLength": 128,
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "type": "array"
-                  },
-                  "propertyNames": {
-                    "type": "string"
-                  },
-                  "type": "object"
-                },
-                "params": {
-                  "additionalProperties": {
-                    "$ref": "#/$defs/__schema1"
-                  },
-                  "propertyNames": {
-                    "type": "string"
-                  },
-                  "type": "object"
-                },
-                "seed": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "sourceVersionId": {
-                  "pattern": "^[a-f0-9]{64}$",
-                  "type": "string"
-                },
-                "version": {
-                  "const": 3,
-                  "type": "number"
-                }
-              },
-              "required": [
-                "version",
-                "componentId",
-                "sourceVersionId",
-                "params",
-                "seed"
-              ],
-              "type": "object"
-            },
-            "before": {
-              "additionalProperties": false,
-              "properties": {
-                "assets": {
-                  "additionalProperties": {
-                    "minLength": 1,
-                    "type": "string"
-                  },
-                  "propertyNames": {
-                    "type": "string"
-                  },
-                  "type": "object"
-                },
-                "componentId": {
-                  "maxLength": 256,
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "mediaBindings": {
-                  "additionalProperties": {
-                    "items": {
-                      "maxLength": 128,
-                      "minLength": 1,
-                      "type": "string"
-                    },
-                    "type": "array"
-                  },
-                  "propertyNames": {
-                    "type": "string"
-                  },
-                  "type": "object"
-                },
-                "params": {
-                  "additionalProperties": {
-                    "$ref": "#/$defs/__schema1"
-                  },
-                  "propertyNames": {
-                    "type": "string"
-                  },
-                  "type": "object"
-                },
-                "seed": {
-                  "minLength": 1,
-                  "type": "string"
-                },
-                "sourceVersionId": {
-                  "pattern": "^[a-f0-9]{64}$",
-                  "type": "string"
-                },
-                "version": {
-                  "const": 3,
-                  "type": "number"
-                }
-              },
-              "required": [
-                "version",
-                "componentId",
-                "sourceVersionId",
-                "params",
-                "seed"
-              ],
-              "type": "object"
-            },
-            "placementId": {
-              "minLength": 1,
-              "type": "string"
-            }
-          },
-          "required": [
-            "placementId",
-            "before",
-            "after"
-          ],
-          "type": "object"
-        },
-        "maxItems": 512,
-        "minItems": 1,
-        "type": "array"
-      },
-      "componentId": {
-        "minLength": 1,
-        "type": "string"
-      },
-      "expectedCompositionEtag": {
-        "minLength": 1,
-        "type": "string"
-      },
-      "from": {
-        "pattern": "^[a-f0-9]{64}$",
-        "type": "string"
-      },
-      "to": {
-        "pattern": "^[a-f0-9]{64}$",
-        "type": "string"
-      },
-      "type": {
-        "const": "component.repin-v3",
-        "type": "string"
-      }
-    },
-    "required": [
-      "type",
-      "componentId",
-      "from",
-      "to",
-      "expectedCompositionEtag",
-      "changes"
-    ],
-    "type": "object"
-  }
-]

addedInput schema / properties / body / properties / ops / items / oneOf

Added value: +[
+  {
+    "additionalProperties": false,
+    "description": "Add a clip to the timeline. The clip self-routes to a track by FAMILY (`clip.kind`, else derived from `source.kind`, else the target track) — a `media` clip MUST carry `kind` (video|audio|image) or a `trackId`, else it is rejected as ambiguous. `trackId` targets an existing SAME-family track; `newTrack:true` (with optional pinned `newTrackId`) creates a fresh track of that family.",
+    "properties": {
+      "clip": {
+        "additionalProperties": false,
+        "properties": {
+          "automation": {
+            "additionalProperties": false,
+            "properties": {
+              "lanes": {
+                "items": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "points": {
+                      "items": {
+                        "additionalProperties": false,
+                        "properties": {
+                          "t": {
+                            "type": "number"
+                          },
+                          "v": {
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "t",
+                          "v"
+                        ],
+                        "type": "object"
+                      },
+                      "minItems": 2,
+                      "type": "array"
+                    },
+                    "target": {
+                      "const": "volume",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "target",
+                    "points"
+                  ],
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "version": {
+                "const": 1,
+                "type": "number"
+              }
+            },
+            "required": [
+              "version",
+              "lanes"
+            ],
+            "type": "object"
+          },
+          "captionVisibility": {
+            "description": "Video media clip only. Hide native captions while this clip is topmost and covers the lower picture, or when an opaque, effect-free clip has an explicitly full-frame region, even with fit:contain. Caption words and timings remain stored and resume when another visible clip takes over.",
+            "enum": [
+              "visible",
+              "hidden"
+            ],
+            "type": "string"
+          },
+          "duration": {
+            "exclusiveMinimum": 0,
+            "type": "number"
+          },
+          "effects": {
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "component": {
+                  "oneOf": [
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "assets": {
+                          "additionalProperties": {
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "maxLength": 256,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "componentId": {
+                          "maxLength": 256,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "mediaBindings": {
+                          "additionalProperties": {
+                            "items": {
+                              "maxLength": 128,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "array"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "maxLength": 128,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "params": {
+                          "additionalProperties": {
+                            "$ref": "#/$defs/__schema0"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "seed": {
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "sourceVersionId": {
+                          "pattern": "^[a-f0-9]{64}$",
+                          "type": "string"
+                        },
+                        "version": {
+                          "const": 3,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "version",
+                        "componentId",
+                        "sourceVersionId",
+                        "params",
+                        "seed"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "assets": {
+                          "additionalProperties": {
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "maxLength": 256,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "componentId": {
+                          "maxLength": 256,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "mediaBindings": {
+                          "additionalProperties": {
+                            "items": {
+                              "maxLength": 128,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "array"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "maxLength": 128,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "params": {
+                          "additionalProperties": {
+                            "$ref": "#/$defs/__schema0"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "seed": {
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "sourceVersionId": {
+                          "pattern": "^[a-f0-9]{64}$",
+                          "type": "string"
+                        },
+                        "version": {
+                          "const": 4,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "version",
+                        "componentId",
+                        "sourceVersionId",
+                        "params",
+                        "seed"
+                      ],
+                      "type": "object"
+                    }
+                  ]
+                },
+                "id": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "params": {
+                  "additionalProperties": {},
+                  "properties": {},
+                  "propertyNames": {
+                    "type": "string"
+                  },
+                  "type": "object"
+                },
+                "primitiveId": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "window": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "duration": {
+                      "exclusiveMinimum": 0,
+                      "type": "number"
+                    },
+                    "startTime": {
+                      "minimum": 0,
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "startTime",
+                    "duration"
+                  ],
+                  "type": "object"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "fit": {
+            "enum": [
+              "cover",
+              "contain"
+            ],
+            "type": "string"
+          },
+          "id": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "kind": {
+            "enum": [
+              "video",
+              "audio",
+              "image",
+              "overlay",
+              "effect"
+            ],
+            "type": "string"
+          },
+          "legacyKeyframes": {
+            "additionalProperties": false,
+            "properties": {
+              "channels": {
+                "items": {
+                  "type": "string"
+                },
+                "type": "array"
+              },
+              "needsUpgrade": {
+                "const": true,
+                "type": "boolean"
+              },
+              "record": {}
+            },
+            "required": [
+              "needsUpgrade",
+              "channels",
+              "record"
+            ],
+            "type": "object"
+          },
+          "linkGroupId": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "opacity": {
+            "maximum": 1,
+            "minimum": 0,
+            "type": "number"
+          },
+          "position": {
+            "additionalProperties": {},
+            "description": "Clip CENTRE as a fraction of the frame: {x:0.5,y:0.5} is dead centre, 0 to 1 is inside the frame, and a little overshoot (down to -1, up to 2) is how an entrance starts off-canvas. NOT pixels: the renderer maps x to `left: x*100%`, so `x: 180` sits 180 frame-widths away and draws nothing.",
+            "properties": {
+              "x": {
+                "maximum": 2,
+                "minimum": -1,
+                "type": "number"
+              },
+              "y": {
+                "maximum": 2,
+                "minimum": -1,
+                "type": "number"
+              }
+            },
+            "required": [
+              "x",
+              "y"
+            ],
+            "type": "object"
+          },
+          "region": {
+            "additionalProperties": {},
+            "properties": {
+              "h": {
+                "exclusiveMinimum": 0,
+                "maximum": 1,
+                "type": "number"
+              },
+              "w": {
+                "exclusiveMinimum": 0,
+                "maximum": 1,
+                "type": "number"
+              },
+              "x": {
+                "maximum": 1,
+                "minimum": 0,
+                "type": "number"
+              },
+              "y": {
+                "maximum": 1,
+                "minimum": 0,
+                "type": "number"
+              }
+            },
+            "required": [
+              "x",
+              "y",
+              "w",
+              "h"
+            ],
+            "type": "object"
+          },
+          "rotation": {
+            "type": "number"
+          },
+          "scale": {
+            "exclusiveMinimum": 0,
+            "type": "number"
+          },
+          "source": {
+            "oneOf": [
+              {
+                "additionalProperties": {},
+                "properties": {
+                  "anchor": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "clipId": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "offsetMs": {
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "clipId",
+                      "offsetMs"
+                    ],
+                    "type": "object"
+                  },
+                  "audioRole": {
+                    "enum": [
+                      "sfx",
+                      "music",
+                      "vo",
+                      "ambience"
+                    ],
+                    "type": "string"
+                  },
+                  "duck": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "attackMs": {
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "duckDb": {
+                        "maximum": 0,
+                        "type": "number"
+                      },
+                      "releaseMs": {
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "windows": {
+                        "items": {
+                          "additionalProperties": {},
+                          "properties": {
+                            "endMs": {
+                              "type": "number"
+                            },
+                            "startMs": {
+                              "type": "number"
+                            }
+                          },
+                          "required": [
+                            "startMs",
+                            "endMs"
+                          ],
+                          "type": "object"
+                        },
+                        "type": "array"
+                      }
+                    },
+                    "required": [
+                      "duckDb",
+                      "attackMs",
+                      "releaseMs"
+                    ],
+                    "type": "object"
+                  },
+                  "excludedRanges": {
+                    "items": {
+                      "additionalProperties": {},
+                      "properties": {
+                        "end": {
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "reason": {
+                          "type": "string"
+                        },
+                        "start": {
+                          "minimum": 0,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "start",
+                        "end"
+                      ],
+                      "type": "object"
+                    },
+                    "type": "array"
+                  },
+                  "fadeInMs": {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "fadeOutMs": {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "kenBurns": {
+                    "enum": [
+                      "in",
+                      "out",
+                      "pan-l",
+                      "pan-r",
+                      "none"
+                    ],
+                    "type": "string"
+                  },
+                  "kind": {
+                    "const": "media",
+                    "type": "string"
+                  },
+                  "loop": {
+                    "type": "boolean"
+                  },
+                  "mediaId": {
+                    "type": "string"
+                  },
+                  "muted": {
+                    "type": "boolean"
+                  },
+                  "playbackRate": {
+                    "exclusiveMinimum": 0,
+                    "type": "number"
+                  },
+                  "reframe": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "segments": {
+                        "items": {
+                          "additionalProperties": {},
+                          "properties": {
+                            "bias": {
+                              "additionalProperties": {},
+                              "description": "Optional FINE framing nudge off the focus center, source-normalized in [−0.3, 0.3]. A small correction (headroom, rule-of-thirds), NOT a reframe — use `focus`/`zoom` for the actual shot. Omit (treated as 0) to sit dead-center on the focus.",
+                              "properties": {
+                                "x": {
+                                  "description": "Horizontal nudge, source-normalized (+ = right).",
+                                  "maximum": 0.3,
+                                  "minimum": -0.3,
+                                  "type": "number"
+                                },
+                                "y": {
+                                  "description": "Vertical nudge, source-normalized (+ = down).",
+                                  "maximum": 0.3,
+                                  "minimum": -0.3,
+                                  "type": "number"
+                                }
+                              },
+                              "required": [
+                                "x",
+                                "y"
+                              ],
+                              "type": "object"
+                            },
+                            "ease": {
+                              "additionalProperties": {},
+                              "description": "Zoom/center ramp DURATIONS in SECONDS at this segment's edges — NOT a unitless 0–1 curve. ~0.3–0.6s reads as a snappy push; >1s reads sluggish. Keep `in` + `out` ≤ the segment's duration (endSec − startSec): the two edges share the span, so to ramp across the WHOLE segment set one edge to the full duration and the other to 0. Omit for an instant cut to this framing.",
+                              "properties": {
+                                "in": {
+                                  "description": "Ease-IN ramp DURATION in seconds at the segment START.",
+                                  "minimum": 0,
+                                  "type": "number"
+                                },
+                                "out": {
+                                  "description": "Ease-OUT ramp DURATION in seconds at the segment END.",
+                                  "minimum": 0,
+                                  "type": "number"
+                                }
+                              },
+                              "required": [
+                                "in",
+                                "out"
+                              ],
+                              "type": "object"
+                            },
+                            "endSec": {
+                              "description": "Segment END in seconds, clip-relative. The span (endSec − startSec) is this segment's duration — the window `ease` ramps over.",
+                              "exclusiveMinimum": 0,
+                              "type": "number"
+                            },
+                            "focus": {
+                              "description": "WHO/WHAT the camera tracks this segment (the reframe center), selected by `mode`: `frame-center` = no tracking, hold the geometric center (static/graphic footage, or a pure zoom); `point` = lock to a fixed source-normalized {x,y} (a non-moving on-screen element); `face` = track a detected face by `faceId` (from get_media_context), with optional `shotScale` close|standard|wide for tightness; `all-faces` = frame the bounding box of every detected face (group/ensemble shots); `active-speaker` = follow whoever is speaking (diarized talking-head / podcast). Pick by what the beat is about; pair with `zoom` for how tight.",
+                              "oneOf": [
+                                {
+                                  "additionalProperties": {},
+                                  "properties": {
+                                    "mode": {
+                                      "const": "frame-center",
+                                      "type": "string"
+                                    }
+                                  },
+                                  "required": [
+                                    "mode"
+                                  ],
+                                  "type": "object"
+                                },
+                                {
+                                  "additionalProperties": {},
+                                  "properties": {
+                                    "mode": {
+                                      "const": "point",
+                                      "type": "string"
+                                    },
+                                    "x": {
+                                      "maximum": 1,
+                                      "minimum": 0,
+                                      "type": "number"
+                                    },
+                                    "y": {
+                                      "maximum": 1,
+                                      "minimum": 0,
+                                      "type": "number"
+                                    }
+                                  },
+                                  "required": [
+                                    "mode",
+                                    "x",
+                                    "y"
+                                  ],
+                                  "type": "object"
+                                },
+                                {
+                                  "additionalProperties": {},
+                                  "properties": {
+                                    "faceId": {
+                                      "minLength": 1,
+                                      "type": "string"
+                                    },
+                                    "mode": {
+                                      "const": "face",
+                                      "type": "string"
+                                    },
+                                    "shotScale": {
+                                      "enum": [
+                                        "close",
+                                        "standard",
+                                        "wide"
+                                      ],
+                                      "type": "string"
+                                    }
+                                  },
+                                  "required": [
+                                    "mode",
+                                    "faceId"
+                                  ],
+                                  "type": "object"
+                                },
+                                {
+                                  "additionalProperties": {},
+                                  "properties": {
+                                    "mode": {
+                                      "const": "all-faces",
+                                      "type": "string"
+                                    }
+                                  },
+                                  "required": [
+                                    "mode"
+                                  ],
+                                  "type": "object"
+                                },
+                                {
+                                  "additionalProperties": {},
+                                  "properties": {
+                                    "mode": {
+                                      "const": "active-speaker",
+                                      "type": "string"
+                                    }
+                                  },
+                                  "required": [
+                                    "mode"
+                                  ],
+                                  "type": "object"
+                                }
+                              ]
+                            },
+                            "intent": {
+                              "description": "Optional editorial LABEL for diff/log readability (e.g. 'speaker-tight', 'wide-context'). Cosmetic — NOT honored by the derive math and excluded from the variant cache key.",
+                              "type": "string"
+                            },
+                            "startSec": {
+                              "description": "Segment START in seconds, clip-relative. Segments tile the clip's duration in order.",
+                              "minimum": 0,
+                              "type": "number"
+                            },
+                            "zoom": {
+                              "description": "How TIGHT the framing is — the fraction of the source the output viewport shows. <1 punches IN (a smaller source fraction, magnified to fill the frame); 1 = the full frame (no crop). ~0.6–0.8 is a moderate push-in, ~0.5 a tight close-up, 0.1 the maximum zoom. There is NO zoom-OUT past the full frame (max 1). Omit for the full frame. MUTUALLY EXCLUSIVE with `focus.shotScale`: a face-tracked shot is sized EITHER by the editorial scale (shotScale, calibrated to the detected face) OR by an explicit zoom — never both.",
+                              "maximum": 1,
+                              "minimum": 0.1,
+                              "type": "number"
+                            }
+                          },
+                          "required": [
+                            "startSec",
+                            "endSec",
+                            "focus"
+                          ],
+                          "type": "object"
+                        },
+                        "minItems": 1,
+                        "type": "array"
+                      }
+                    },
+                    "required": [
+                      "segments"
+                    ],
+                    "type": "object"
+                  },
+                  "sync": {
+                    "enum": [
+                      "video",
+                      "independent"
+                    ],
+                    "type": "string"
+                  },
+                  "trim": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "end": {
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "start": {
+                        "minimum": 0,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "start",
+                      "end"
+                    ],
+                    "type": "object"
+                  },
+                  "volume": {
+                    "maximum": 4,
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "volumeDb": {
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "mediaId"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "componentId": {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "execution": {
+                    "oneOf": [
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+                        "additionalProperties": false,
+                        "properties": {
+                          "assets": {
+                            "additionalProperties": {
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "properties": {},
+                            "propertyNames": {
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+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "componentId": {
+                            "maxLength": 256,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "mediaBindings": {
+                            "additionalProperties": {
+                              "items": {
+                                "maxLength": 128,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "array"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "maxLength": 128,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "params": {
+                            "additionalProperties": {
+                              "$ref": "#/$defs/__schema0"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "seed": {
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "sourceVersionId": {
+                            "pattern": "^[a-f0-9]{64}$",
+                            "type": "string"
+                          },
+                          "version": {
+                            "const": 3,
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "version",
+                          "componentId",
+                          "sourceVersionId",
+                          "params",
+                          "seed"
+                        ],
+                        "type": "object"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "assets": {
+                            "additionalProperties": {
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "properties": {},
+                            "propertyNames": {
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+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "componentId": {
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+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "mediaBindings": {
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+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "array"
+                            },
+                            "properties": {},
+                            "propertyNames": {
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+                              "minLength": 1,
+                              "type": "string"
+                            },
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+                            "additionalProperties": {
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+                            },
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+                            },
+                            "type": "object"
+                          },
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+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "sourceVersionId": {
+                            "pattern": "^[a-f0-9]{64}$",
+                            "type": "string"
+                          },
+                          "version": {
+                            "const": 4,
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "version",
+                          "componentId",
+                          "sourceVersionId",
+                          "params",
+                          "seed"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  },
+                  "kind": {
+                    "const": "component",
+                    "type": "string"
+                  },
+                  "placement": {
+                    "oneOf": [
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "kind": {
+                            "const": "clip",
+                            "type": "string"
+                          },
+                          "version": {
+                            "const": 3,
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "version",
+                          "kind"
+                        ],
+                        "type": "object"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "kind": {
+                            "const": "content-slots",
+                            "type": "string"
+                          },
+                          "slots": {
+                            "additionalProperties": {
+                              "additionalProperties": false,
+                              "properties": {
+                                "ownership": {
+                                  "enum": [
+                                    "reference",
+                                    "exclusive"
+                                  ],
+                                  "type": "string"
+                                },
+                                "targetClipIds": {
+                                  "items": {
+                                    "maxLength": 256,
+                                    "minLength": 1,
+                                    "type": "string"
+                                  },
+                                  "type": "array"
+                                }
+                              },
+                              "required": [
+                                "targetClipIds",
+                                "ownership"
+                              ],
+                              "type": "object"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "maxLength": 256,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "version": {
+                            "const": 3,
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "version",
+                          "kind",
+                          "slots"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  },
+                  "props": {
+                    "additionalProperties": {},
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "retired": {
+                    "additionalProperties": {},
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "zPlane": {
+                    "enum": [
+                      "front",
+                      "behind-subject"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "componentId",
+                  "props"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": {},
+                "properties": {
+                  "anchor": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "space": {
+                        "const": "scene",
+                        "type": "string"
+                      },
+                      "x": {
+                        "maximum": 1,
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "y": {
+                        "maximum": 1,
+                        "minimum": 0,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "space",
+                      "x",
+                      "y"
+                    ],
+                    "type": "object"
+                  },
+                  "kind": {
+                    "const": "overlay",
+                    "type": "string"
+                  },
+                  "parallax": {
+                    "maximum": 0.3,
+                    "minimum": -0.3,
+                    "type": "number"
+                  },
+                  "params": {
+                    "additionalProperties": {},
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "primitiveId": {
+                    "minLength": 1,
+                    "pattern": "^(?!custom$)",
+                    "type": "string"
+                  },
+                  "zPlane": {
+                    "enum": [
+                      "front",
+                      "behind-subject"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
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+                  "primitiveId",
+                  "params"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
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+                        "additionalProperties": false,
+                        "properties": {
+                          "assets": {
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+                            "minLength": 1,
+                            "type": "string"
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+                            "type": "number"
+                          }
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+                          "sourceVersionId",
+                          "params",
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+                            "type": "number"
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+                          "params",
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+                  "tokens": {
+                    "additionalProperties": {
+                      "type": "string"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "zPlane": {
+                    "const": "front",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "html"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "compositionId": {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "kind": {
+                    "const": "composition",
+                    "type": "string"
+                  },
+                  "trim": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "end": {
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "start": {
+                        "minimum": 0,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "start",
+                      "end"
+                    ],
+                    "type": "object"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "compositionId"
+                ],
+                "type": "object"
+              }
+            ]
+          },
+          "startTime": {
+            "minimum": 0,
+            "type": "number"
+          },
+          "transitionIn": {
+            "additionalProperties": {},
+            "properties": {
+              "component": {
+                "oneOf": [
+                  {
+                    "additionalProperties": false,
+                    "properties": {
+                      "assets": {
+                        "additionalProperties": {
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "properties": {},
+                        "propertyNames": {
+                          "maxLength": 256,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "object"
+                      },
+                      "componentId": {
+                        "maxLength": 256,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "mediaBindings": {
+                        "additionalProperties": {
+                          "items": {
+                            "maxLength": 128,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "array"
+                        },
+                        "properties": {},
+                        "propertyNames": {
+                          "maxLength": 128,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "object"
+                      },
+                      "params": {
+                        "additionalProperties": {
+                          "$ref": "#/$defs/__schema0"
+                        },
+                        "properties": {},
+                        "propertyNames": {
+                          "type": "string"
+                        },
+                        "type": "object"
+                      },
+                      "seed": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "sourceVersionId": {
+                        "pattern": "^[a-f0-9]{64}$",
+                        "type": "string"
+                      },
+                      "version": {
+                        "const": 3,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "version",
+                      "componentId",
+                      "sourceVersionId",
+                      "params",
+                      "seed"
+                    ],
+                    "type": "object"
+                  },
+                  {
+                    "additionalProperties": false,
+                    "properties": {
+                      "assets": {
+                        "additionalProperties": {
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "properties": {},
+                        "propertyNames": {
+                          "maxLength": 256,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "object"
+                      },
+                      "componentId": {
+                        "maxLength": 256,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "mediaBindings": {
+                        "additionalProperties": {
+                          "items": {
+                            "maxLength": 128,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "array"
+                        },
+                        "properties": {},
+                        "propertyNames": {
+                          "maxLength": 128,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "object"
+                      },
+                      "params": {
+                        "additionalProperties": {
+                          "$ref": "#/$defs/__schema0"
+                        },
+                        "properties": {},
+                        "propertyNames": {
+                          "type": "string"
+                        },
+                        "type": "object"
+                      },
+                      "seed": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "sourceVersionId": {
+                        "pattern": "^[a-f0-9]{64}$",
+                        "type": "string"
+                      },
+                      "version": {
+                        "const": 4,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "version",
+                      "componentId",
+                      "sourceVersionId",
+                      "params",
+                      "seed"
+                    ],
+                    "type": "object"
+                  }
+                ]
+              },
+              "duration": {
+                "exclusiveMinimum": 0,
+                "type": "number"
+              },
+              "fromClipId": {
+                "minLength": 1,
+                "type": "string"
+              },
+              "handlePolicy": {
+                "const": "outgoing-overrun-at-cut-v1",
+                "type": "string"
+              },
+              "id": {
+                "minLength": 1,
+                "type": "string"
+              },
+              "toClipId": {
+                "minLength": 1,
+                "type": "string"
+              },
+              "type": {
+                "minLength": 1,
+                "type": "string"
+              }
+            },
+            "required": [
+              "type",
+              "duration"
+            ],
+            "type": "object"
+          },
+          "tweens": {
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "duration": {
+                  "exclusiveMinimum": 0,
+                  "type": "number"
+                },
+                "id": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "keyframes": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "easeEach": {
+                      "const": "none",
+                      "type": "string"
+                    },
+                    "format": {
+                      "const": "percentage",
+                      "type": "string"
+                    },
+                    "keyframes": {
+                      "items": {
+                        "additionalProperties": false,
+                        "properties": {
+                          "ease": {
+                            "type": "string"
+                          },
+                          "percentage": {
+                            "type": "number"
+                          },
+                          "properties": {
+                            "additionalProperties": {
+                              "type": "number"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "type": "string"
+                            },
+                            "type": "object"
+                          }
+                        },
+                        "required": [
+                          "percentage",
+                          "properties"
+                        ],
+                        "type": "object"
+                      },
+                      "minItems": 2,
+                      "type": "array"
+                    }
+                  },
+                  "required": [
+                    "format",
+                    "easeEach",
+                    "keyframes"
+                  ],
+                  "type": "object"
+                },
+                "position": {
+                  "type": "number"
+                },
+                "propertyGroup": {
+                  "enum": [
+                    "visual",
+                    "scale",
+                    "rotation",
+                    "position"
+                  ],
+                  "type": "string"
+                }
+              },
+              "required": [
+                "id",
+                "propertyGroup",
+                "position",
+                "duration",
+                "keyframes"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          }
+        },
+        "required": [
+          "id",
+          "startTime",
+          "duration",
+          "source"
+        ],
+        "type": "object"
+      },
+      "newTrack": {
+        "type": "boolean"
+      },
+      "newTrackId": {
+        "type": "string"
+      },
+      "trackId": {
+        "type": "string"
+      },
+      "type": {
+        "const": "clip.add",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clip"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Remove a clip by id (located across every track).",
+    "properties": {
+      "clipId": {
+        "type": "string"
+      },
+      "type": {
+        "const": "clip.remove",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Set (or CLEAR, with `keyframes: null`) ONE keyframed channel of a clip: `opacity`, `scale`, `rotation`, `position.x`, `position.y` or `volume`, with at least two keyframes `{time, value, ease?}` in any order. `time` is seconds from the clip's own start (0 to its duration); `value` uses the property's own unit, as its scalar: opacity 0-1, scale a multiplier, rotation degrees, position.x/position.y a FRACTION of the frame (0.5 = centre, never px), volume 0-4. Each keyframe's optional `ease` shapes the segment ARRIVING at it, in HyperFrames' vocabulary: `none` (linear, the default), named eases such as `power2.out`, `back.out`, `expo.inOut`, `spring-gentle`, `hold`, or `custom(M0,0 Cx1,y1 x2,y2 1,1)` (a cubic, x in [0,1]). Before its first keyframe a channel holds its first value, after its last it holds the last; a channel OVERRIDES the clip's scalar (`opacity`, `scale`, `rotation`, `position`). The op REPLACES that property's keyframes; other channels are untouched. Volume keyframes are linear and only for a video or audio media clip. Trims and splits keep every keyframe on its content. Keyframes are stored as HyperFrames tweens (`tweens`) and automation (`automation`) on the clip; author them with this op, not `clip.update`.",
+    "properties": {
+      "clipId": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "keyframes": {
+        "anyOf": [
+          {
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "ease": {
+                  "type": "string"
+                },
+                "time": {
+                  "minimum": 0,
+                  "type": "number"
+                },
+                "value": {
+                  "type": "number"
+                }
+              },
+              "required": [
+                "time",
+                "value"
+              ],
+              "type": "object"
+            },
+            "minItems": 2,
+            "type": "array"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "property": {
+        "enum": [
+          "opacity",
+          "scale",
+          "rotation",
+          "position.x",
+          "position.y",
+          "volume"
+        ],
+        "type": "string"
+      },
+      "type": {
+        "const": "clip.setKeyframes",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId",
+      "property",
+      "keyframes"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Patch an existing clip by id (cross-family). The patch is a partial TimelineClip. NOTE: `source` is REPLACED wholesale — the patch merges at the top level only, so a partial `source` WIPES the source fields you omit. Patch the whole source object when changing it. (To change reframe/excluded ranges, prefer setCropIntents / addExcludedRange, not a source patch.)",
+    "properties": {
+      "clipId": {
+        "type": "string"
+      },
+      "patch": {
+        "additionalProperties": false,
+        "properties": {
+          "automation": {
+            "additionalProperties": false,
+            "properties": {
+              "lanes": {
+                "items": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "points": {
+                      "items": {
+                        "additionalProperties": false,
+                        "properties": {
+                          "t": {
+                            "type": "number"
+                          },
+                          "v": {
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "t",
+                          "v"
+                        ],
+                        "type": "object"
+                      },
+                      "minItems": 2,
+                      "type": "array"
+                    },
+                    "target": {
+                      "const": "volume",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "target",
+                    "points"
+                  ],
+                  "type": "object"
+                },
+                "type": "array"
+              },
+              "version": {
+                "const": 1,
+                "type": "number"
+              }
+            },
+            "required": [
+              "version",
+              "lanes"
+            ],
+            "type": "object"
+          },
+          "captionVisibility": {
+            "description": "Video media clip only. Hide native captions while this clip is topmost and covers the lower picture, or when an opaque, effect-free clip has an explicitly full-frame region, even with fit:contain. Caption words and timings remain stored and resume when another visible clip takes over.",
+            "enum": [
+              "visible",
+              "hidden"
+            ],
+            "type": "string"
+          },
+          "duration": {
+            "exclusiveMinimum": 0,
+            "type": "number"
+          },
+          "effects": {
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "component": {
+                  "oneOf": [
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "assets": {
+                          "additionalProperties": {
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "maxLength": 256,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "componentId": {
+                          "maxLength": 256,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "mediaBindings": {
+                          "additionalProperties": {
+                            "items": {
+                              "maxLength": 128,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "array"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "maxLength": 128,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "params": {
+                          "additionalProperties": {
+                            "$ref": "#/$defs/__schema0"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "seed": {
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "sourceVersionId": {
+                          "pattern": "^[a-f0-9]{64}$",
+                          "type": "string"
+                        },
+                        "version": {
+                          "const": 3,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "version",
+                        "componentId",
+                        "sourceVersionId",
+                        "params",
+                        "seed"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "assets": {
+                          "additionalProperties": {
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "maxLength": 256,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "componentId": {
+                          "maxLength": 256,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "mediaBindings": {
+                          "additionalProperties": {
+                            "items": {
+                              "maxLength": 128,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "array"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "maxLength": 128,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "params": {
+                          "additionalProperties": {
+                            "$ref": "#/$defs/__schema0"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "seed": {
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "sourceVersionId": {
+                          "pattern": "^[a-f0-9]{64}$",
+                          "type": "string"
+                        },
+                        "version": {
+                          "const": 4,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "version",
+                        "componentId",
+                        "sourceVersionId",
+                        "params",
+                        "seed"
+                      ],
+                      "type": "object"
+                    }
+                  ]
+                },
+                "id": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "params": {
+                  "additionalProperties": {},
+                  "properties": {},
+                  "propertyNames": {
+                    "type": "string"
+                  },
+                  "type": "object"
+                },
+                "primitiveId": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "window": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "duration": {
+                      "exclusiveMinimum": 0,
+                      "type": "number"
+                    },
+                    "startTime": {
+                      "minimum": 0,
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "startTime",
+                    "duration"
+                  ],
+                  "type": "object"
+                }
+              },
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "fit": {
+            "enum": [
+              "cover",
+              "contain"
+            ],
+            "type": "string"
+          },
+          "id": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "kind": {
+            "enum": [
+              "video",
+              "audio",
+              "image",
+              "overlay",
+              "effect"
+            ],
+            "type": "string"
+          },
+          "legacyKeyframes": {
+            "additionalProperties": false,
+            "properties": {
+              "channels": {
+                "items": {
+                  "type": "string"
+                },
+                "type": "array"
+              },
+              "needsUpgrade": {
+                "const": true,
+                "type": "boolean"
+              },
+              "record": {}
+            },
+            "required": [
+              "needsUpgrade",
+              "channels",
+              "record"
+            ],
+            "type": "object"
+          },
+          "linkGroupId": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "opacity": {
+            "maximum": 1,
+            "minimum": 0,
+            "type": "number"
+          },
+          "position": {
+            "additionalProperties": {},
+            "description": "Clip CENTRE as a fraction of the frame: {x:0.5,y:0.5} is dead centre, 0 to 1 is inside the frame, and a little overshoot (down to -1, up to 2) is how an entrance starts off-canvas. NOT pixels: the renderer maps x to `left: x*100%`, so `x: 180` sits 180 frame-widths away and draws nothing.",
+            "properties": {
+              "x": {
+                "maximum": 2,
+                "minimum": -1,
+                "type": "number"
+              },
+              "y": {
+                "maximum": 2,
+                "minimum": -1,
+                "type": "number"
+              }
+            },
+            "required": [
+              "x",
+              "y"
+            ],
+            "type": "object"
+          },
+          "region": {
+            "additionalProperties": {},
+            "properties": {
+              "h": {
+                "exclusiveMinimum": 0,
+                "maximum": 1,
+                "type": "number"
+              },
+              "w": {
+                "exclusiveMinimum": 0,
+                "maximum": 1,
+                "type": "number"
+              },
+              "x": {
+                "maximum": 1,
+                "minimum": 0,
+                "type": "number"
+              },
+              "y": {
+                "maximum": 1,
+                "minimum": 0,
+                "type": "number"
+              }
+            },
+            "required": [
+              "x",
+              "y",
+              "w",
+              "h"
+            ],
+            "type": "object"
+          },
+          "rotation": {
+            "type": "number"
+          },
+          "scale": {
+            "exclusiveMinimum": 0,
+            "type": "number"
+          },
+          "source": {
+            "oneOf": [
+              {
+                "additionalProperties": {},
+                "properties": {
+                  "anchor": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "clipId": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "offsetMs": {
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "clipId",
+                      "offsetMs"
+                    ],
+                    "type": "object"
+                  },
+                  "audioRole": {
+                    "enum": [
+                      "sfx",
+                      "music",
+                      "vo",
+                      "ambience"
+                    ],
+                    "type": "string"
+                  },
+                  "duck": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "attackMs": {
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "duckDb": {
+                        "maximum": 0,
+                        "type": "number"
+                      },
+                      "releaseMs": {
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "windows": {
+                        "items": {
+                          "additionalProperties": {},
+                          "properties": {
+                            "endMs": {
+                              "type": "number"
+                            },
+                            "startMs": {
+                              "type": "number"
+                            }
+                          },
+                          "required": [
+                            "startMs",
+                            "endMs"
+                          ],
+                          "type": "object"
+                        },
+                        "type": "array"
+                      }
+                    },
+                    "required": [
+                      "duckDb",
+                      "attackMs",
+                      "releaseMs"
+                    ],
+                    "type": "object"
+                  },
+                  "excludedRanges": {
+                    "items": {
+                      "additionalProperties": {},
+                      "properties": {
+                        "end": {
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "reason": {
+                          "type": "string"
+                        },
+                        "start": {
+                          "minimum": 0,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "start",
+                        "end"
+                      ],
+                      "type": "object"
+                    },
+                    "type": "array"
+                  },
+                  "fadeInMs": {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "fadeOutMs": {
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "kenBurns": {
+                    "enum": [
+                      "in",
+                      "out",
+                      "pan-l",
+                      "pan-r",
+                      "none"
+                    ],
+                    "type": "string"
+                  },
+                  "kind": {
+                    "const": "media",
+                    "type": "string"
+                  },
+                  "loop": {
+                    "type": "boolean"
+                  },
+                  "mediaId": {
+                    "type": "string"
+                  },
+                  "muted": {
+                    "type": "boolean"
+                  },
+                  "playbackRate": {
+                    "exclusiveMinimum": 0,
+                    "type": "number"
+                  },
+                  "reframe": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "segments": {
+                        "items": {
+                          "additionalProperties": {},
+                          "properties": {
+                            "bias": {
+                              "additionalProperties": {},
+                              "description": "Optional FINE framing nudge off the focus center, source-normalized in [−0.3, 0.3]. A small correction (headroom, rule-of-thirds), NOT a reframe — use `focus`/`zoom` for the actual shot. Omit (treated as 0) to sit dead-center on the focus.",
+                              "properties": {
+                                "x": {
+                                  "description": "Horizontal nudge, source-normalized (+ = right).",
+                                  "maximum": 0.3,
+                                  "minimum": -0.3,
+                                  "type": "number"
+                                },
+                                "y": {
+                                  "description": "Vertical nudge, source-normalized (+ = down).",
+                                  "maximum": 0.3,
+                                  "minimum": -0.3,
+                                  "type": "number"
+                                }
+                              },
+                              "required": [
+                                "x",
+                                "y"
+                              ],
+                              "type": "object"
+                            },
+                            "ease": {
+                              "additionalProperties": {},
+                              "description": "Zoom/center ramp DURATIONS in SECONDS at this segment's edges — NOT a unitless 0–1 curve. ~0.3–0.6s reads as a snappy push; >1s reads sluggish. Keep `in` + `out` ≤ the segment's duration (endSec − startSec): the two edges share the span, so to ramp across the WHOLE segment set one edge to the full duration and the other to 0. Omit for an instant cut to this framing.",
+                              "properties": {
+                                "in": {
+                                  "description": "Ease-IN ramp DURATION in seconds at the segment START.",
+                                  "minimum": 0,
+                                  "type": "number"
+                                },
+                                "out": {
+                                  "description": "Ease-OUT ramp DURATION in seconds at the segment END.",
+                                  "minimum": 0,
+                                  "type": "number"
+                                }
+                              },
+                              "required": [
+                                "in",
+                                "out"
+                              ],
+                              "type": "object"
+                            },
+                            "endSec": {
+                              "description": "Segment END in seconds, clip-relative. The span (endSec − startSec) is this segment's duration — the window `ease` ramps over.",
+                              "exclusiveMinimum": 0,
+                              "type": "number"
+                            },
+                            "focus": {
+                              "description": "WHO/WHAT the camera tracks this segment (the reframe center), selected by `mode`: `frame-center` = no tracking, hold the geometric center (static/graphic footage, or a pure zoom); `point` = lock to a fixed source-normalized {x,y} (a non-moving on-screen element); `face` = track a detected face by `faceId` (from get_media_context), with optional `shotScale` close|standard|wide for tightness; `all-faces` = frame the bounding box of every detected face (group/ensemble shots); `active-speaker` = follow whoever is speaking (diarized talking-head / podcast). Pick by what the beat is about; pair with `zoom` for how tight.",
+                              "oneOf": [
+                                {
+                                  "additionalProperties": {},
+                                  "properties": {
+                                    "mode": {
+                                      "const": "frame-center",
+                                      "type": "string"
+                                    }
+                                  },
+                                  "required": [
+                                    "mode"
+                                  ],
+                                  "type": "object"
+                                },
+                                {
+                                  "additionalProperties": {},
+                                  "properties": {
+                                    "mode": {
+                                      "const": "point",
+                                      "type": "string"
+                                    },
+                                    "x": {
+                                      "maximum": 1,
+                                      "minimum": 0,
+                                      "type": "number"
+                                    },
+                                    "y": {
+                                      "maximum": 1,
+                                      "minimum": 0,
+                                      "type": "number"
+                                    }
+                                  },
+                                  "required": [
+                                    "mode",
+                                    "x",
+                                    "y"
+                                  ],
+                                  "type": "object"
+                                },
+                                {
+                                  "additionalProperties": {},
+                                  "properties": {
+                                    "faceId": {
+                                      "minLength": 1,
+                                      "type": "string"
+                                    },
+                                    "mode": {
+                                      "const": "face",
+                                      "type": "string"
+                                    },
+                                    "shotScale": {
+                                      "enum": [
+                                        "close",
+                                        "standard",
+                                        "wide"
+                                      ],
+                                      "type": "string"
+                                    }
+                                  },
+                                  "required": [
+                                    "mode",
+                                    "faceId"
+                                  ],
+                                  "type": "object"
+                                },
+                                {
+                                  "additionalProperties": {},
+                                  "properties": {
+                                    "mode": {
+                                      "const": "all-faces",
+                                      "type": "string"
+                                    }
+                                  },
+                                  "required": [
+                                    "mode"
+                                  ],
+                                  "type": "object"
+                                },
+                                {
+                                  "additionalProperties": {},
+                                  "properties": {
+                                    "mode": {
+                                      "const": "active-speaker",
+                                      "type": "string"
+                                    }
+                                  },
+                                  "required": [
+                                    "mode"
+                                  ],
+                                  "type": "object"
+                                }
+                              ]
+                            },
+                            "intent": {
+                              "description": "Optional editorial LABEL for diff/log readability (e.g. 'speaker-tight', 'wide-context'). Cosmetic — NOT honored by the derive math and excluded from the variant cache key.",
+                              "type": "string"
+                            },
+                            "startSec": {
+                              "description": "Segment START in seconds, clip-relative. Segments tile the clip's duration in order.",
+                              "minimum": 0,
+                              "type": "number"
+                            },
+                            "zoom": {
+                              "description": "How TIGHT the framing is — the fraction of the source the output viewport shows. <1 punches IN (a smaller source fraction, magnified to fill the frame); 1 = the full frame (no crop). ~0.6–0.8 is a moderate push-in, ~0.5 a tight close-up, 0.1 the maximum zoom. There is NO zoom-OUT past the full frame (max 1). Omit for the full frame. MUTUALLY EXCLUSIVE with `focus.shotScale`: a face-tracked shot is sized EITHER by the editorial scale (shotScale, calibrated to the detected face) OR by an explicit zoom — never both.",
+                              "maximum": 1,
+                              "minimum": 0.1,
+                              "type": "number"
+                            }
+                          },
+                          "required": [
+                            "startSec",
+                            "endSec",
+                            "focus"
+                          ],
+                          "type": "object"
+                        },
+                        "minItems": 1,
+                        "type": "array"
+                      }
+                    },
+                    "required": [
+                      "segments"
+                    ],
+                    "type": "object"
+                  },
+                  "sync": {
+                    "enum": [
+                      "video",
+                      "independent"
+                    ],
+                    "type": "string"
+                  },
+                  "trim": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "end": {
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "start": {
+                        "minimum": 0,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "start",
+                      "end"
+                    ],
+                    "type": "object"
+                  },
+                  "volume": {
+                    "maximum": 4,
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "volumeDb": {
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "mediaId"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "componentId": {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "execution": {
+                    "oneOf": [
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+                        "additionalProperties": false,
+                        "properties": {
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+                              "minLength": 1,
+                              "type": "string"
+                            },
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+                            "propertyNames": {
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+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "componentId": {
+                            "maxLength": 256,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "mediaBindings": {
+                            "additionalProperties": {
+                              "items": {
+                                "maxLength": 128,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "array"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "maxLength": 128,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "params": {
+                            "additionalProperties": {
+                              "$ref": "#/$defs/__schema0"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "seed": {
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "sourceVersionId": {
+                            "pattern": "^[a-f0-9]{64}$",
+                            "type": "string"
+                          },
+                          "version": {
+                            "const": 3,
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "version",
+                          "componentId",
+                          "sourceVersionId",
+                          "params",
+                          "seed"
+                        ],
+                        "type": "object"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "assets": {
+                            "additionalProperties": {
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "properties": {},
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+                              "minLength": 1,
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+                            },
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+                          },
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+                            "minLength": 1,
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+                          },
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+                            "type": "string"
+                          },
+                          "sourceVersionId": {
+                            "pattern": "^[a-f0-9]{64}$",
+                            "type": "string"
+                          },
+                          "version": {
+                            "const": 4,
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "version",
+                          "componentId",
+                          "sourceVersionId",
+                          "params",
+                          "seed"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  },
+                  "kind": {
+                    "const": "component",
+                    "type": "string"
+                  },
+                  "placement": {
+                    "oneOf": [
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "kind": {
+                            "const": "clip",
+                            "type": "string"
+                          },
+                          "version": {
+                            "const": 3,
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "version",
+                          "kind"
+                        ],
+                        "type": "object"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "kind": {
+                            "const": "content-slots",
+                            "type": "string"
+                          },
+                          "slots": {
+                            "additionalProperties": {
+                              "additionalProperties": false,
+                              "properties": {
+                                "ownership": {
+                                  "enum": [
+                                    "reference",
+                                    "exclusive"
+                                  ],
+                                  "type": "string"
+                                },
+                                "targetClipIds": {
+                                  "items": {
+                                    "maxLength": 256,
+                                    "minLength": 1,
+                                    "type": "string"
+                                  },
+                                  "type": "array"
+                                }
+                              },
+                              "required": [
+                                "targetClipIds",
+                                "ownership"
+                              ],
+                              "type": "object"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "maxLength": 256,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "version": {
+                            "const": 3,
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "version",
+                          "kind",
+                          "slots"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  },
+                  "props": {
+                    "additionalProperties": {},
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "retired": {
+                    "additionalProperties": {},
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "zPlane": {
+                    "enum": [
+                      "front",
+                      "behind-subject"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "componentId",
+                  "props"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": {},
+                "properties": {
+                  "anchor": {
+                    "additionalProperties": {},
+                    "properties": {
+                      "space": {
+                        "const": "scene",
+                        "type": "string"
+                      },
+                      "x": {
+                        "maximum": 1,
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "y": {
+                        "maximum": 1,
+                        "minimum": 0,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
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+                      "x",
+                      "y"
+                    ],
+                    "type": "object"
+                  },
+                  "kind": {
+                    "const": "overlay",
+                    "type": "string"
+                  },
+                  "parallax": {
+                    "maximum": 0.3,
+                    "minimum": -0.3,
+                    "type": "number"
+                  },
+                  "params": {
+                    "additionalProperties": {},
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
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+                  },
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+                    "pattern": "^(?!custom$)",
+                    "type": "string"
+                  },
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+                      "behind-subject"
+                    ],
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+                  }
+                },
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+                  "primitiveId",
+                  "params"
+                ],
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+              },
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+                          "params",
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+                      "version": {
+                        "const": 3,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "version",
+                      "componentId",
+                      "sourceVersionId",
+                      "params",
+                      "seed"
+                    ],
+                    "type": "object"
+                  },
+                  {
+                    "additionalProperties": false,
+                    "properties": {
+                      "assets": {
+                        "additionalProperties": {
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "properties": {},
+                        "propertyNames": {
+                          "maxLength": 256,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "object"
+                      },
+                      "componentId": {
+                        "maxLength": 256,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "mediaBindings": {
+                        "additionalProperties": {
+                          "items": {
+                            "maxLength": 128,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "array"
+                        },
+                        "properties": {},
+                        "propertyNames": {
+                          "maxLength": 128,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "object"
+                      },
+                      "params": {
+                        "additionalProperties": {
+                          "$ref": "#/$defs/__schema0"
+                        },
+                        "properties": {},
+                        "propertyNames": {
+                          "type": "string"
+                        },
+                        "type": "object"
+                      },
+                      "seed": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "sourceVersionId": {
+                        "pattern": "^[a-f0-9]{64}$",
+                        "type": "string"
+                      },
+                      "version": {
+                        "const": 4,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "version",
+                      "componentId",
+                      "sourceVersionId",
+                      "params",
+                      "seed"
+                    ],
+                    "type": "object"
+                  }
+                ]
+              },
+              "duration": {
+                "exclusiveMinimum": 0,
+                "type": "number"
+              },
+              "fromClipId": {
+                "minLength": 1,
+                "type": "string"
+              },
+              "handlePolicy": {
+                "const": "outgoing-overrun-at-cut-v1",
+                "type": "string"
+              },
+              "id": {
+                "minLength": 1,
+                "type": "string"
+              },
+              "toClipId": {
+                "minLength": 1,
+                "type": "string"
+              },
+              "type": {
+                "minLength": 1,
+                "type": "string"
+              }
+            },
+            "required": [
+              "type",
+              "duration"
+            ],
+            "type": "object"
+          },
+          "tweens": {
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "duration": {
+                  "exclusiveMinimum": 0,
+                  "type": "number"
+                },
+                "id": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "keyframes": {
+                  "additionalProperties": false,
+                  "properties": {
+                    "easeEach": {
+                      "const": "none",
+                      "type": "string"
+                    },
+                    "format": {
+                      "const": "percentage",
+                      "type": "string"
+                    },
+                    "keyframes": {
+                      "items": {
+                        "additionalProperties": false,
+                        "properties": {
+                          "ease": {
+                            "type": "string"
+                          },
+                          "percentage": {
+                            "type": "number"
+                          },
+                          "properties": {
+                            "additionalProperties": {
+                              "type": "number"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "type": "string"
+                            },
+                            "type": "object"
+                          }
+                        },
+                        "required": [
+                          "percentage",
+                          "properties"
+                        ],
+                        "type": "object"
+                      },
+                      "minItems": 2,
+                      "type": "array"
+                    }
+                  },
+                  "required": [
+                    "format",
+                    "easeEach",
+                    "keyframes"
+                  ],
+                  "type": "object"
+                },
+                "position": {
+                  "type": "number"
+                },
+                "propertyGroup": {
+                  "enum": [
+                    "visual",
+                    "scale",
+                    "rotation",
+                    "position"
+                  ],
+                  "type": "string"
+                }
+              },
+              "required": [
+                "id",
+                "propertyGroup",
+                "position",
+                "duration",
+                "keyframes"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          }
+        },
+        "type": "object"
+      },
+      "type": {
+        "const": "clip.update",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId",
+      "patch"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Remove EVERY clip sourced from a given mediaId (e.g. after deleting that media).",
+    "properties": {
+      "mediaId": {
+        "type": "string"
+      },
+      "type": {
+        "const": "removeClipsByMediaId",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "mediaId"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Replace the overlay channel wholesale with the given clips (bulk set, not a merge).",
+    "properties": {
+      "clips": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "automation": {
+              "additionalProperties": false,
+              "properties": {
+                "lanes": {
+                  "items": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "points": {
+                        "items": {
+                          "additionalProperties": false,
+                          "properties": {
+                            "t": {
+                              "type": "number"
+                            },
+                            "v": {
+                              "type": "number"
+                            }
+                          },
+                          "required": [
+                            "t",
+                            "v"
+                          ],
+                          "type": "object"
+                        },
+                        "minItems": 2,
+                        "type": "array"
+                      },
+                      "target": {
+                        "const": "volume",
+                        "type": "string"
+                      }
+                    },
+                    "required": [
+                      "target",
+                      "points"
+                    ],
+                    "type": "object"
+                  },
+                  "type": "array"
+                },
+                "version": {
+                  "const": 1,
+                  "type": "number"
+                }
+              },
+              "required": [
+                "version",
+                "lanes"
+              ],
+              "type": "object"
+            },
+            "captionVisibility": {
+              "description": "Video media clip only. Hide native captions while this clip is topmost and covers the lower picture, or when an opaque, effect-free clip has an explicitly full-frame region, even with fit:contain. Caption words and timings remain stored and resume when another visible clip takes over.",
+              "enum": [
+                "visible",
+                "hidden"
+              ],
+              "type": "string"
+            },
+            "duration": {
+              "exclusiveMinimum": 0,
+              "type": "number"
+            },
+            "effects": {
+              "items": {
+                "additionalProperties": false,
+                "properties": {
+                  "component": {
+                    "oneOf": [
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "assets": {
+                            "additionalProperties": {
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "maxLength": 256,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "componentId": {
+                            "maxLength": 256,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "mediaBindings": {
+                            "additionalProperties": {
+                              "items": {
+                                "maxLength": 128,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "array"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "maxLength": 128,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "params": {
+                            "additionalProperties": {
+                              "$ref": "#/$defs/__schema0"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "seed": {
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "sourceVersionId": {
+                            "pattern": "^[a-f0-9]{64}$",
+                            "type": "string"
+                          },
+                          "version": {
+                            "const": 3,
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "version",
+                          "componentId",
+                          "sourceVersionId",
+                          "params",
+                          "seed"
+                        ],
+                        "type": "object"
+                      },
+                      {
+                        "additionalProperties": false,
+                        "properties": {
+                          "assets": {
+                            "additionalProperties": {
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "maxLength": 256,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "componentId": {
+                            "maxLength": 256,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "mediaBindings": {
+                            "additionalProperties": {
+                              "items": {
+                                "maxLength": 128,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "array"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "maxLength": 128,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "params": {
+                            "additionalProperties": {
+                              "$ref": "#/$defs/__schema0"
+                            },
+                            "properties": {},
+                            "propertyNames": {
+                              "type": "string"
+                            },
+                            "type": "object"
+                          },
+                          "seed": {
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "sourceVersionId": {
+                            "pattern": "^[a-f0-9]{64}$",
+                            "type": "string"
+                          },
+                          "version": {
+                            "const": 4,
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "version",
+                          "componentId",
+                          "sourceVersionId",
+                          "params",
+                          "seed"
+                        ],
+                        "type": "object"
+                      }
+                    ]
+                  },
+                  "id": {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "params": {
+                    "additionalProperties": {},
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "primitiveId": {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "window": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "duration": {
+                        "exclusiveMinimum": 0,
+                        "type": "number"
+                      },
+                      "startTime": {
+                        "minimum": 0,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "startTime",
+                      "duration"
+                    ],
+                    "type": "object"
+                  }
+                },
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "fit": {
+              "enum": [
+                "cover",
+                "contain"
+              ],
+              "type": "string"
+            },
+            "id": {
+              "minLength": 1,
+              "type": "string"
+            },
+            "kind": {
+              "enum": [
+                "video",
+                "audio",
+                "image",
+                "overlay",
+                "effect"
+              ],
+              "type": "string"
+            },
+            "legacyKeyframes": {
+              "additionalProperties": false,
+              "properties": {
+                "channels": {
+                  "items": {
+                    "type": "string"
+                  },
+                  "type": "array"
+                },
+                "needsUpgrade": {
+                  "const": true,
+                  "type": "boolean"
+                },
+                "record": {}
+              },
+              "required": [
+                "needsUpgrade",
+                "channels",
+                "record"
+              ],
+              "type": "object"
+            },
+            "linkGroupId": {
+              "minLength": 1,
+              "type": "string"
+            },
+            "opacity": {
+              "maximum": 1,
+              "minimum": 0,
+              "type": "number"
+            },
+            "position": {
+              "additionalProperties": {},
+              "description": "Clip CENTRE as a fraction of the frame: {x:0.5,y:0.5} is dead centre, 0 to 1 is inside the frame, and a little overshoot (down to -1, up to 2) is how an entrance starts off-canvas. NOT pixels: the renderer maps x to `left: x*100%`, so `x: 180` sits 180 frame-widths away and draws nothing.",
+              "properties": {
+                "x": {
+                  "maximum": 2,
+                  "minimum": -1,
+                  "type": "number"
+                },
+                "y": {
+                  "maximum": 2,
+                  "minimum": -1,
+                  "type": "number"
+                }
+              },
+              "required": [
+                "x",
+                "y"
+              ],
+              "type": "object"
+            },
+            "region": {
+              "additionalProperties": {},
+              "properties": {
+                "h": {
+                  "exclusiveMinimum": 0,
+                  "maximum": 1,
+                  "type": "number"
+                },
+                "w": {
+                  "exclusiveMinimum": 0,
+                  "maximum": 1,
+                  "type": "number"
+                },
+                "x": {
+                  "maximum": 1,
+                  "minimum": 0,
+                  "type": "number"
+                },
+                "y": {
+                  "maximum": 1,
+                  "minimum": 0,
+                  "type": "number"
+                }
+              },
+              "required": [
+                "x",
+                "y",
+                "w",
+                "h"
+              ],
+              "type": "object"
+            },
+            "rotation": {
+              "type": "number"
+            },
+            "scale": {
+              "exclusiveMinimum": 0,
+              "type": "number"
+            },
+            "source": {
+              "oneOf": [
+                {
+                  "additionalProperties": {},
+                  "properties": {
+                    "anchor": {
+                      "additionalProperties": {},
+                      "properties": {
+                        "clipId": {
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "offsetMs": {
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "clipId",
+                        "offsetMs"
+                      ],
+                      "type": "object"
+                    },
+                    "audioRole": {
+                      "enum": [
+                        "sfx",
+                        "music",
+                        "vo",
+                        "ambience"
+                      ],
+                      "type": "string"
+                    },
+                    "duck": {
+                      "additionalProperties": {},
+                      "properties": {
+                        "attackMs": {
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "duckDb": {
+                          "maximum": 0,
+                          "type": "number"
+                        },
+                        "releaseMs": {
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "windows": {
+                          "items": {
+                            "additionalProperties": {},
+                            "properties": {
+                              "endMs": {
+                                "type": "number"
+                              },
+                              "startMs": {
+                                "type": "number"
+                              }
+                            },
+                            "required": [
+                              "startMs",
+                              "endMs"
+                            ],
+                            "type": "object"
+                          },
+                          "type": "array"
+                        }
+                      },
+                      "required": [
+                        "duckDb",
+                        "attackMs",
+                        "releaseMs"
+                      ],
+                      "type": "object"
+                    },
+                    "excludedRanges": {
+                      "items": {
+                        "additionalProperties": {},
+                        "properties": {
+                          "end": {
+                            "minimum": 0,
+                            "type": "number"
+                          },
+                          "reason": {
+                            "type": "string"
+                          },
+                          "start": {
+                            "minimum": 0,
+                            "type": "number"
+                          }
+                        },
+                        "required": [
+                          "start",
+                          "end"
+                        ],
+                        "type": "object"
+                      },
+                      "type": "array"
+                    },
+                    "fadeInMs": {
+                      "minimum": 0,
+                      "type": "number"
+                    },
+                    "fadeOutMs": {
+                      "minimum": 0,
+                      "type": "number"
+                    },
+                    "kenBurns": {
+                      "enum": [
+                        "in",
+                        "out",
+                        "pan-l",
+                        "pan-r",
+                        "none"
+                      ],
+                      "type": "string"
+                    },
+                    "kind": {
+                      "const": "media",
+                      "type": "string"
+                    },
+                    "loop": {
+                      "type": "boolean"
+                    },
+                    "mediaId": {
+                      "type": "string"
+                    },
+                    "muted": {
+                      "type": "boolean"
+                    },
+                    "playbackRate": {
+                      "exclusiveMinimum": 0,
+                      "type": "number"
+                    },
+                    "reframe": {
+                      "additionalProperties": {},
+                      "properties": {
+                        "segments": {
+                          "items": {
+                            "additionalProperties": {},
+                            "properties": {
+                              "bias": {
+                                "additionalProperties": {},
+                                "description": "Optional FINE framing nudge off the focus center, source-normalized in [−0.3, 0.3]. A small correction (headroom, rule-of-thirds), NOT a reframe — use `focus`/`zoom` for the actual shot. Omit (treated as 0) to sit dead-center on the focus.",
+                                "properties": {
+                                  "x": {
+                                    "description": "Horizontal nudge, source-normalized (+ = right).",
+                                    "maximum": 0.3,
+                                    "minimum": -0.3,
+                                    "type": "number"
+                                  },
+                                  "y": {
+                                    "description": "Vertical nudge, source-normalized (+ = down).",
+                                    "maximum": 0.3,
+                                    "minimum": -0.3,
+                                    "type": "number"
+                                  }
+                                },
+                                "required": [
+                                  "x",
+                                  "y"
+                                ],
+                                "type": "object"
+                              },
+                              "ease": {
+                                "additionalProperties": {},
+                                "description": "Zoom/center ramp DURATIONS in SECONDS at this segment's edges — NOT a unitless 0–1 curve. ~0.3–0.6s reads as a snappy push; >1s reads sluggish. Keep `in` + `out` ≤ the segment's duration (endSec − startSec): the two edges share the span, so to ramp across the WHOLE segment set one edge to the full duration and the other to 0. Omit for an instant cut to this framing.",
+                                "properties": {
+                                  "in": {
+                                    "description": "Ease-IN ramp DURATION in seconds at the segment START.",
+                                    "minimum": 0,
+                                    "type": "number"
+                                  },
+                                  "out": {
+                                    "description": "Ease-OUT ramp DURATION in seconds at the segment END.",
+                                    "minimum": 0,
+                                    "type": "number"
+                                  }
+                                },
+                                "required": [
+                                  "in",
+                                  "out"
+                                ],
+                                "type": "object"
+                              },
+                              "endSec": {
+                                "description": "Segment END in seconds, clip-relative. The span (endSec − startSec) is this segment's duration — the window `ease` ramps over.",
+                                "exclusiveMinimum": 0,
+                                "type": "number"
+                              },
+                              "focus": {
+                                "description": "WHO/WHAT the camera tracks this segment (the reframe center), selected by `mode`: `frame-center` = no tracking, hold the geometric center (static/graphic footage, or a pure zoom); `point` = lock to a fixed source-normalized {x,y} (a non-moving on-screen element); `face` = track a detected face by `faceId` (from get_media_context), with optional `shotScale` close|standard|wide for tightness; `all-faces` = frame the bounding box of every detected face (group/ensemble shots); `active-speaker` = follow whoever is speaking (diarized talking-head / podcast). Pick by what the beat is about; pair with `zoom` for how tight.",
+                                "oneOf": [
+                                  {
+                                    "additionalProperties": {},
+                                    "properties": {
+                                      "mode": {
+                                        "const": "frame-center",
+                                        "type": "string"
+                                      }
+                                    },
+                                    "required": [
+                                      "mode"
+                                    ],
+                                    "type": "object"
+                                  },
+                                  {
+                                    "additionalProperties": {},
+                                    "properties": {
+                                      "mode": {
+                                        "const": "point",
+                                        "type": "string"
+                                      },
+                                      "x": {
+                                        "maximum": 1,
+                                        "minimum": 0,
+                                        "type": "number"
+                                      },
+                                      "y": {
+                                        "maximum": 1,
+                                        "minimum": 0,
+                                        "type": "number"
+                                      }
+                                    },
+                                    "required": [
+                                      "mode",
+                                      "x",
+                                      "y"
+                                    ],
+                                    "type": "object"
+                                  },
+                                  {
+                                    "additionalProperties": {},
+                                    "properties": {
+                                      "faceId": {
+                                        "minLength": 1,
+                                        "type": "string"
+                                      },
+                                      "mode": {
+                                        "const": "face",
+                                        "type": "string"
+                                      },
+                                      "shotScale": {
+                                        "enum": [
+                                          "close",
+                                          "standard",
+                                          "wide"
+                                        ],
+                                        "type": "string"
+                                      }
+                                    },
+                                    "required": [
+                                      "mode",
+                                      "faceId"
+                                    ],
+                                    "type": "object"
+                                  },
+                                  {
+                                    "additionalProperties": {},
+                                    "properties": {
+                                      "mode": {
+                                        "const": "all-faces",
+                                        "type": "string"
+                                      }
+                                    },
+                                    "required": [
+                                      "mode"
+                                    ],
+                                    "type": "object"
+                                  },
+                                  {
+                                    "additionalProperties": {},
+                                    "properties": {
+                                      "mode": {
+                                        "const": "active-speaker",
+                                        "type": "string"
+                                      }
+                                    },
+                                    "required": [
+                                      "mode"
+                                    ],
+                                    "type": "object"
+                                  }
+                                ]
+                              },
+                              "intent": {
+                                "description": "Optional editorial LABEL for diff/log readability (e.g. 'speaker-tight', 'wide-context'). Cosmetic — NOT honored by the derive math and excluded from the variant cache key.",
+                                "type": "string"
+                              },
+                              "startSec": {
+                                "description": "Segment START in seconds, clip-relative. Segments tile the clip's duration in order.",
+                                "minimum": 0,
+                                "type": "number"
+                              },
+                              "zoom": {
+                                "description": "How TIGHT the framing is — the fraction of the source the output viewport shows. <1 punches IN (a smaller source fraction, magnified to fill the frame); 1 = the full frame (no crop). ~0.6–0.8 is a moderate push-in, ~0.5 a tight close-up, 0.1 the maximum zoom. There is NO zoom-OUT past the full frame (max 1). Omit for the full frame. MUTUALLY EXCLUSIVE with `focus.shotScale`: a face-tracked shot is sized EITHER by the editorial scale (shotScale, calibrated to the detected face) OR by an explicit zoom — never both.",
+                                "maximum": 1,
+                                "minimum": 0.1,
+                                "type": "number"
+                              }
+                            },
+                            "required": [
+                              "startSec",
+                              "endSec",
+                              "focus"
+                            ],
+                            "type": "object"
+                          },
+                          "minItems": 1,
+                          "type": "array"
+                        }
+                      },
+                      "required": [
+                        "segments"
+                      ],
+                      "type": "object"
+                    },
+                    "sync": {
+                      "enum": [
+                        "video",
+                        "independent"
+                      ],
+                      "type": "string"
+                    },
+                    "trim": {
+                      "additionalProperties": {},
+                      "properties": {
+                        "end": {
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "start": {
+                          "minimum": 0,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "start",
+                        "end"
+                      ],
+                      "type": "object"
+                    },
+                    "volume": {
+                      "maximum": 4,
+                      "minimum": 0,
+                      "type": "number"
+                    },
+                    "volumeDb": {
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "mediaId"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "componentId": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "execution": {
+                      "oneOf": [
+                        {
+                          "additionalProperties": false,
+                          "properties": {
+                            "assets": {
+                              "additionalProperties": {
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "maxLength": 256,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "componentId": {
+                              "maxLength": 256,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "mediaBindings": {
+                              "additionalProperties": {
+                                "items": {
+                                  "maxLength": 128,
+                                  "minLength": 1,
+                                  "type": "string"
+                                },
+                                "type": "array"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "maxLength": 128,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "params": {
+                              "additionalProperties": {
+                                "$ref": "#/$defs/__schema0"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "seed": {
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "sourceVersionId": {
+                              "pattern": "^[a-f0-9]{64}$",
+                              "type": "string"
+                            },
+                            "version": {
+                              "const": 3,
+                              "type": "number"
+                            }
+                          },
+                          "required": [
+                            "version",
+                            "componentId",
+                            "sourceVersionId",
+                            "params",
+                            "seed"
+                          ],
+                          "type": "object"
+                        },
+                        {
+                          "additionalProperties": false,
+                          "properties": {
+                            "assets": {
+                              "additionalProperties": {
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "maxLength": 256,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "componentId": {
+                              "maxLength": 256,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "mediaBindings": {
+                              "additionalProperties": {
+                                "items": {
+                                  "maxLength": 128,
+                                  "minLength": 1,
+                                  "type": "string"
+                                },
+                                "type": "array"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "maxLength": 128,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "params": {
+                              "additionalProperties": {
+                                "$ref": "#/$defs/__schema0"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "seed": {
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "sourceVersionId": {
+                              "pattern": "^[a-f0-9]{64}$",
+                              "type": "string"
+                            },
+                            "version": {
+                              "const": 4,
+                              "type": "number"
+                            }
+                          },
+                          "required": [
+                            "version",
+                            "componentId",
+                            "sourceVersionId",
+                            "params",
+                            "seed"
+                          ],
+                          "type": "object"
+                        }
+                      ]
+                    },
+                    "kind": {
+                      "const": "component",
+                      "type": "string"
+                    },
+                    "placement": {
+                      "oneOf": [
+                        {
+                          "additionalProperties": false,
+                          "properties": {
+                            "kind": {
+                              "const": "clip",
+                              "type": "string"
+                            },
+                            "version": {
+                              "const": 3,
+                              "type": "number"
+                            }
+                          },
+                          "required": [
+                            "version",
+                            "kind"
+                          ],
+                          "type": "object"
+                        },
+                        {
+                          "additionalProperties": false,
+                          "properties": {
+                            "kind": {
+                              "const": "content-slots",
+                              "type": "string"
+                            },
+                            "slots": {
+                              "additionalProperties": {
+                                "additionalProperties": false,
+                                "properties": {
+                                  "ownership": {
+                                    "enum": [
+                                      "reference",
+                                      "exclusive"
+                                    ],
+                                    "type": "string"
+                                  },
+                                  "targetClipIds": {
+                                    "items": {
+                                      "maxLength": 256,
+                                      "minLength": 1,
+                                      "type": "string"
+                                    },
+                                    "type": "array"
+                                  }
+                                },
+                                "required": [
+                                  "targetClipIds",
+                                  "ownership"
+                                ],
+                                "type": "object"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "maxLength": 256,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "version": {
+                              "const": 3,
+                              "type": "number"
+                            }
+                          },
+                          "required": [
+                            "version",
+                            "kind",
+                            "slots"
+                          ],
+                          "type": "object"
+                        }
+                      ]
+                    },
+                    "props": {
+                      "additionalProperties": {},
+                      "properties": {},
+                      "propertyNames": {
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "retired": {
+                      "additionalProperties": {},
+                      "properties": {},
+                      "propertyNames": {
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "zPlane": {
+                      "enum": [
+                        "front",
+                        "behind-subject"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "componentId",
+                    "props"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": {},
+                  "properties": {
+                    "anchor": {
+                      "additionalProperties": {},
+                      "properties": {
+                        "space": {
+                          "const": "scene",
+                          "type": "string"
+                        },
+                        "x": {
+                          "maximum": 1,
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "y": {
+                          "maximum": 1,
+                          "minimum": 0,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "space",
+                        "x",
+                        "y"
+                      ],
+                      "type": "object"
+                    },
+                    "kind": {
+                      "const": "overlay",
+                      "type": "string"
+                    },
+                    "parallax": {
+                      "maximum": 0.3,
+                      "minimum": -0.3,
+                      "type": "number"
+                    },
+                    "params": {
+                      "additionalProperties": {},
+                      "properties": {},
+                      "propertyNames": {
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "primitiveId": {
+                      "minLength": 1,
+                      "pattern": "^(?!custom$)",
+                      "type": "string"
+                    },
+                    "zPlane": {
+                      "enum": [
+                        "front",
+                        "behind-subject"
+                      ],
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "primitiveId",
+                    "params"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "component": {
+                      "oneOf": [
+                        {
+                          "additionalProperties": false,
+                          "properties": {
+                            "assets": {
+                              "additionalProperties": {
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "maxLength": 256,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "componentId": {
+                              "maxLength": 256,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "mediaBindings": {
+                              "additionalProperties": {
+                                "items": {
+                                  "maxLength": 128,
+                                  "minLength": 1,
+                                  "type": "string"
+                                },
+                                "type": "array"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "maxLength": 128,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "params": {
+                              "additionalProperties": {
+                                "$ref": "#/$defs/__schema0"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "seed": {
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "sourceVersionId": {
+                              "pattern": "^[a-f0-9]{64}$",
+                              "type": "string"
+                            },
+                            "version": {
+                              "const": 3,
+                              "type": "number"
+                            }
+                          },
+                          "required": [
+                            "version",
+                            "componentId",
+                            "sourceVersionId",
+                            "params",
+                            "seed"
+                          ],
+                          "type": "object"
+                        },
+                        {
+                          "additionalProperties": false,
+                          "properties": {
+                            "assets": {
+                              "additionalProperties": {
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "maxLength": 256,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "componentId": {
+                              "maxLength": 256,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "mediaBindings": {
+                              "additionalProperties": {
+                                "items": {
+                                  "maxLength": 128,
+                                  "minLength": 1,
+                                  "type": "string"
+                                },
+                                "type": "array"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "maxLength": 128,
+                                "minLength": 1,
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "params": {
+                              "additionalProperties": {
+                                "$ref": "#/$defs/__schema0"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "type": "string"
+                              },
+                              "type": "object"
+                            },
+                            "seed": {
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "sourceVersionId": {
+                              "pattern": "^[a-f0-9]{64}$",
+                              "type": "string"
+                            },
+                            "version": {
+                              "const": 4,
+                              "type": "number"
+                            }
+                          },
+                          "required": [
+                            "version",
+                            "componentId",
+                            "sourceVersionId",
+                            "params",
+                            "seed"
+                          ],
+                          "type": "object"
+                        }
+                      ]
+                    },
+                    "kind": {
+                      "const": "effect",
+                      "type": "string"
+                    },
+                    "params": {
+                      "additionalProperties": {},
+                      "properties": {},
+                      "propertyNames": {
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "primitiveId": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "targetTrackIds": {
+                      "items": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "minItems": 1,
+                      "type": "array"
+                    },
+                    "wrapperOrder": {
+                      "maximum": 9007199254740991,
+                      "minimum": 0,
+                      "type": "integer"
+                    }
+                  },
+                  "required": [
+                    "kind"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": {},
+                  "properties": {
+                    "html": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "kind": {
+                      "const": "card",
+                      "type": "string"
+                    },
+                    "tokens": {
+                      "additionalProperties": {
+                        "type": "string"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "zPlane": {
+                      "const": "front",
+                      "type": "string"
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "html"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "compositionId": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "kind": {
+                      "const": "composition",
+                      "type": "string"
+                    },
+                    "trim": {
+                      "additionalProperties": {},
+                      "properties": {
+                        "end": {
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "start": {
+                          "minimum": 0,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "start",
+                        "end"
+                      ],
+                      "type": "object"
+                    }
+                  },
+                  "required": [
+                    "kind",
+                    "compositionId"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "startTime": {
+              "minimum": 0,
+              "type": "number"
+            },
+            "transitionIn": {
+              "additionalProperties": {},
+              "properties": {
+                "component": {
+                  "oneOf": [
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "assets": {
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+                            "minLength": 1,
+                            "type": "string"
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+                          "properties": {},
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+                            "minLength": 1,
+                            "type": "string"
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+                          "type": "object"
+                        },
+                        "componentId": {
+                          "maxLength": 256,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "mediaBindings": {
+                          "additionalProperties": {
+                            "items": {
+                              "maxLength": 128,
+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "array"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "maxLength": 128,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "params": {
+                          "additionalProperties": {
+                            "$ref": "#/$defs/__schema0"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "seed": {
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "sourceVersionId": {
+                          "pattern": "^[a-f0-9]{64}$",
+                          "type": "string"
+                        },
+                        "version": {
+                          "const": 3,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "version",
+                        "componentId",
+                        "sourceVersionId",
+                        "params",
+                        "seed"
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+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "assets": {
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+                            "type": "string"
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+                          "properties": {},
+                          "propertyNames": {
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+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "componentId": {
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+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "mediaBindings": {
+                          "additionalProperties": {
+                            "items": {
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+                              "minLength": 1,
+                              "type": "string"
+                            },
+                            "type": "array"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "maxLength": 128,
+                            "minLength": 1,
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "params": {
+                          "additionalProperties": {
+                            "$ref": "#/$defs/__schema0"
+                          },
+                          "properties": {},
+                          "propertyNames": {
+                            "type": "string"
+                          },
+                          "type": "object"
+                        },
+                        "seed": {
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "sourceVersionId": {
+                          "pattern": "^[a-f0-9]{64}$",
+                          "type": "string"
+                        },
+                        "version": {
+                          "const": 4,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "version",
+                        "componentId",
+                        "sourceVersionId",
+                        "params",
+                        "seed"
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+                      "type": "object"
+                    }
+                  ]
+                },
+                "duration": {
+                  "exclusiveMinimum": 0,
+                  "type": "number"
+                },
+                "fromClipId": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "handlePolicy": {
+                  "const": "outgoing-overrun-at-cut-v1",
+                  "type": "string"
+                },
+                "id": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "toClipId": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "type": {
+                  "minLength": 1,
+                  "type": "string"
+                }
+              },
+              "required": [
+                "type",
+                "duration"
+              ],
+              "type": "object"
+            },
+            "tweens": {
+              "items": {
+                "additionalProperties": false,
+                "properties": {
+                  "duration": {
+                    "exclusiveMinimum": 0,
+                    "type": "number"
+                  },
+                  "id": {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "keyframes": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "easeEach": {
+                        "const": "none",
+                        "type": "string"
+                      },
+                      "format": {
+                        "const": "percentage",
+                        "type": "string"
+                      },
+                      "keyframes": {
+                        "items": {
+                          "additionalProperties": false,
+                          "properties": {
+                            "ease": {
+                              "type": "string"
+                            },
+                            "percentage": {
+                              "type": "number"
+                            },
+                            "properties": {
+                              "additionalProperties": {
+                                "type": "number"
+                              },
+                              "properties": {},
+                              "propertyNames": {
+                                "type": "string"
+                              },
+                              "type": "object"
+                            }
+                          },
+                          "required": [
+                            "percentage",
+                            "properties"
+                          ],
+                          "type": "object"
+                        },
+                        "minItems": 2,
+                        "type": "array"
+                      }
+                    },
+                    "required": [
+                      "format",
+                      "easeEach",
+                      "keyframes"
+                    ],
+                    "type": "object"
+                  },
+                  "position": {
+                    "type": "number"
+                  },
+                  "propertyGroup": {
+                    "enum": [
+                      "visual",
+                      "scale",
+                      "rotation",
+                      "position"
+                    ],
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "id",
+                  "propertyGroup",
+                  "position",
+                  "duration",
+                  "keyframes"
+                ],
+                "type": "object"
+              },
+              "type": "array"
+            }
+          },
+          "required": [
+            "id",
+            "startTime",
+            "duration",
+            "source"
+          ],
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "type": {
+        "const": "loadOverlays",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clips"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Add a timeline marker (a named time point/range; carry extensions in `metadata`).",
+    "properties": {
+      "marker": {
+        "additionalProperties": false,
+        "properties": {
+          "endTime": {
+            "minimum": 0,
+            "type": "number"
+          },
+          "id": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "kind": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "metadata": {
+            "additionalProperties": {},
+            "properties": {},
+            "propertyNames": {
+              "type": "string"
+            },
+            "type": "object"
+          },
+          "name": {
+            "type": "string"
+          },
+          "startTime": {
+            "minimum": 0,
+            "type": "number"
+          }
+        },
+        "required": [
+          "id",
+          "startTime",
+          "kind"
+        ],
+        "type": "object"
+      },
+      "type": {
+        "const": "addMarker",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "marker"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Remove a marker by id.",
+    "properties": {
+      "markerId": {
+        "type": "string"
+      },
+      "type": {
+        "const": "removeMarker",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "markerId"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Patch a marker's fields by id (partial merge).",
+    "properties": {
+      "markerId": {
+        "type": "string"
+      },
+      "type": {
+        "const": "updateMarker",
+        "type": "string"
+      },
+      "updates": {
+        "additionalProperties": false,
+        "properties": {
+          "endTime": {
+            "minimum": 0,
+            "type": "number"
+          },
+          "id": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "kind": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "metadata": {
+            "additionalProperties": {},
+            "properties": {},
+            "propertyNames": {
+              "type": "string"
+            },
+            "type": "object"
+          },
+          "name": {
+            "type": "string"
+          },
+          "startTime": {
+            "minimum": 0,
+            "type": "number"
+          }
+        },
+        "type": "object"
+      }
+    },
+    "required": [
+      "type",
+      "markerId",
+      "updates"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Set (or CLEAR, with `segments: null`) the camera/reframe channel on a MEDIA clip — the time-aligned source→output viewport (focus, zoom, ease, bias). This is the PREFERRED way to author reframing; do NOT reframe via a whole-source `clip.update` patch. Segments tile the clip's duration.",
+    "properties": {
+      "clipId": {
+        "type": "string"
+      },
+      "segments": {
+        "anyOf": [
+          {
+            "items": {
+              "additionalProperties": {},
+              "properties": {
+                "bias": {
+                  "additionalProperties": {},
+                  "description": "Optional FINE framing nudge off the focus center, source-normalized in [−0.3, 0.3]. A small correction (headroom, rule-of-thirds), NOT a reframe — use `focus`/`zoom` for the actual shot. Omit (treated as 0) to sit dead-center on the focus.",
+                  "properties": {
+                    "x": {
+                      "description": "Horizontal nudge, source-normalized (+ = right).",
+                      "maximum": 0.3,
+                      "minimum": -0.3,
+                      "type": "number"
+                    },
+                    "y": {
+                      "description": "Vertical nudge, source-normalized (+ = down).",
+                      "maximum": 0.3,
+                      "minimum": -0.3,
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "x",
+                    "y"
+                  ],
+                  "type": "object"
+                },
+                "ease": {
+                  "additionalProperties": {},
+                  "description": "Zoom/center ramp DURATIONS in SECONDS at this segment's edges — NOT a unitless 0–1 curve. ~0.3–0.6s reads as a snappy push; >1s reads sluggish. Keep `in` + `out` ≤ the segment's duration (endSec − startSec): the two edges share the span, so to ramp across the WHOLE segment set one edge to the full duration and the other to 0. Omit for an instant cut to this framing.",
+                  "properties": {
+                    "in": {
+                      "description": "Ease-IN ramp DURATION in seconds at the segment START.",
+                      "minimum": 0,
+                      "type": "number"
+                    },
+                    "out": {
+                      "description": "Ease-OUT ramp DURATION in seconds at the segment END.",
+                      "minimum": 0,
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "in",
+                    "out"
+                  ],
+                  "type": "object"
+                },
+                "endSec": {
+                  "description": "Segment END in seconds, clip-relative. The span (endSec − startSec) is this segment's duration — the window `ease` ramps over.",
+                  "exclusiveMinimum": 0,
+                  "type": "number"
+                },
+                "focus": {
+                  "description": "WHO/WHAT the camera tracks this segment (the reframe center), selected by `mode`: `frame-center` = no tracking, hold the geometric center (static/graphic footage, or a pure zoom); `point` = lock to a fixed source-normalized {x,y} (a non-moving on-screen element); `face` = track a detected face by `faceId` (from get_media_context), with optional `shotScale` close|standard|wide for tightness; `all-faces` = frame the bounding box of every detected face (group/ensemble shots); `active-speaker` = follow whoever is speaking (diarized talking-head / podcast). Pick by what the beat is about; pair with `zoom` for how tight.",
+                  "oneOf": [
+                    {
+                      "additionalProperties": {},
+                      "properties": {
+                        "mode": {
+                          "const": "frame-center",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "mode"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": {},
+                      "properties": {
+                        "mode": {
+                          "const": "point",
+                          "type": "string"
+                        },
+                        "x": {
+                          "maximum": 1,
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "y": {
+                          "maximum": 1,
+                          "minimum": 0,
+                          "type": "number"
+                        }
+                      },
+                      "required": [
+                        "mode",
+                        "x",
+                        "y"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": {},
+                      "properties": {
+                        "faceId": {
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "mode": {
+                          "const": "face",
+                          "type": "string"
+                        },
+                        "shotScale": {
+                          "enum": [
+                            "close",
+                            "standard",
+                            "wide"
+                          ],
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "mode",
+                        "faceId"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": {},
+                      "properties": {
+                        "mode": {
+                          "const": "all-faces",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "mode"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": {},
+                      "properties": {
+                        "mode": {
+                          "const": "active-speaker",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "mode"
+                      ],
+                      "type": "object"
+                    }
+                  ]
+                },
+                "intent": {
+                  "description": "Optional editorial LABEL for diff/log readability (e.g. 'speaker-tight', 'wide-context'). Cosmetic — NOT honored by the derive math and excluded from the variant cache key.",
+                  "type": "string"
+                },
+                "startSec": {
+                  "description": "Segment START in seconds, clip-relative. Segments tile the clip's duration in order.",
+                  "minimum": 0,
+                  "type": "number"
+                },
+                "zoom": {
+                  "description": "How TIGHT the framing is — the fraction of the source the output viewport shows. <1 punches IN (a smaller source fraction, magnified to fill the frame); 1 = the full frame (no crop). ~0.6–0.8 is a moderate push-in, ~0.5 a tight close-up, 0.1 the maximum zoom. There is NO zoom-OUT past the full frame (max 1). Omit for the full frame. MUTUALLY EXCLUSIVE with `focus.shotScale`: a face-tracked shot is sized EITHER by the editorial scale (shotScale, calibrated to the detected face) OR by an explicit zoom — never both.",
+                  "maximum": 1,
+                  "minimum": 0.1,
+                  "type": "number"
+                }
+              },
+              "required": [
+                "startSec",
+                "endSec",
+                "focus"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          {
+            "type": "null"
+          }
+        ]
+      },
+      "type": {
+        "const": "setCropIntents",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId",
+      "segments"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Set (or CLEAR, with `effects: []`) a clip's EFFECT channel — the pinned component clip wrappers stacked onto that clip, each `{id, component, window}`: a unique `id`, the wrapper component's execution pin as `component`, and `window: {startTime, duration}` in seconds. The built-in primitive effects were removed: a stored one reads, and save and render refuse it (`effect_retired`), so clear it with `effects: []`. WHOLESALE: the array REPLACES the clip's current effects, so send the full stack (read the clip first to add one). This is the ONLY way to change effects on an existing clip — do NOT reach for a `clip.update` patch, whose top-level merge is the source-clobbering footgun documented above.",
+    "properties": {
+      "clipId": {
+        "type": "string"
+      },
+      "effects": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "component": {
+              "oneOf": [
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "assets": {
+                      "additionalProperties": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 256,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "componentId": {
+                      "maxLength": 256,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "mediaBindings": {
+                      "additionalProperties": {
+                        "items": {
+                          "maxLength": 128,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "array"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 128,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "params": {
+                      "additionalProperties": {
+                        "$ref": "#/$defs/__schema0"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "seed": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "sourceVersionId": {
+                      "pattern": "^[a-f0-9]{64}$",
+                      "type": "string"
+                    },
+                    "version": {
+                      "const": 3,
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "version",
+                    "componentId",
+                    "sourceVersionId",
+                    "params",
+                    "seed"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "assets": {
+                      "additionalProperties": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 256,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "componentId": {
+                      "maxLength": 256,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "mediaBindings": {
+                      "additionalProperties": {
+                        "items": {
+                          "maxLength": 128,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "array"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 128,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "params": {
+                      "additionalProperties": {
+                        "$ref": "#/$defs/__schema0"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "seed": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "sourceVersionId": {
+                      "pattern": "^[a-f0-9]{64}$",
+                      "type": "string"
+                    },
+                    "version": {
+                      "const": 4,
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "version",
+                    "componentId",
+                    "sourceVersionId",
+                    "params",
+                    "seed"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "id": {
+              "minLength": 1,
+              "type": "string"
+            },
+            "params": {
+              "additionalProperties": {},
+              "properties": {},
+              "propertyNames": {
+                "type": "string"
+              },
+              "type": "object"
+            },
+            "primitiveId": {
+              "minLength": 1,
+              "type": "string"
+            },
+            "window": {
+              "additionalProperties": false,
+              "properties": {
+                "duration": {
+                  "exclusiveMinimum": 0,
+                  "type": "number"
+                },
+                "startTime": {
+                  "minimum": 0,
+                  "type": "number"
+                }
+              },
+              "required": [
+                "startTime",
+                "duration"
+              ],
+              "type": "object"
+            }
+          },
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "type": {
+        "const": "setEffects",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId",
+      "effects"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Merge style overrides (font/color/position/emphasis) onto the composition's caption layer. Partial — omitted fields keep their current value; creates the caption container if absent.",
+    "properties": {
+      "style": {
+        "additionalProperties": {},
+        "properties": {
+          "annotationColor": {
+            "type": "string"
+          },
+          "annotationStrokeWidth": {
+            "description": "Annotation stroke width in its 100×100 SVG coordinate system; default 4.",
+            "maximum": 12,
+            "minimum": 0.5,
+            "type": "number"
+          },
+          "annotationTexture": {
+            "description": "Native annotation stroke finish; default clean.",
+            "enum": [
+              "clean",
+              "pencil"
+            ],
+            "type": "string"
+          },
+          "backgroundColor": {
+            "type": "string"
+          },
+          "color": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "emphasisColor": {
+            "type": "string"
+          },
+          "emphasisFontFamily": {
+            "type": "string"
+          },
+          "emphasisFontStyle": {
+            "enum": [
+              "normal",
+              "italic"
+            ],
+            "type": "string"
+          },
+          "emphasisFontWeight": {
+            "maximum": 900,
+            "minimum": 100,
+            "type": "integer"
+          },
+          "emphasisGradient": {
+            "type": "string"
+          },
+          "emphasisLetterSpacing": {
+            "type": "number"
+          },
+          "emphasisPlate": {
+            "type": "boolean"
+          },
+          "emphasisPlateAltColor": {
+            "type": "string"
+          },
+          "emphasisPlateAltTextColor": {
+            "type": "string"
+          },
+          "emphasisPlateColor": {
+            "type": "string"
+          },
+          "emphasisPlatePadX": {
+            "type": "number"
+          },
+          "emphasisPlatePadY": {
+            "type": "number"
+          },
+          "emphasisPlateRadius": {
+            "minimum": 0,
+            "type": "number"
+          },
+          "emphasisPlateReveal": {
+            "description": "Grow a shared emphasis plate as saved words appear while reserving its final layout width.",
+            "type": "boolean"
+          },
+          "emphasisPlateTextColor": {
+            "type": "string"
+          },
+          "emphasisScale": {
+            "exclusiveMinimum": 0,
+            "type": "number"
+          },
+          "emphasisTextTransform": {
+            "enum": [
+              "none",
+              "uppercase",
+              "capitalize"
+            ],
+            "type": "string"
+          },
+          "entrance": {
+            "enum": [
+              "none",
+              "fade",
+              "word-pop",
+              "stagger-up"
+            ],
+            "type": "string"
+          },
+          "entranceMs": {
+            "minimum": 0,
+            "type": "number"
+          },
+          "entranceStaggerMs": {
+            "minimum": 0,
+            "type": "number"
+          },
+          "exitMs": {
+            "minimum": 0,
+            "type": "number"
+          },
+          "fontFamily": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "fontSize": {
+            "description": "Font size as % of composition height (1-15, default 5). NOT px.",
+            "maximum": 15,
+            "minimum": 1,
+            "type": "number"
+          },
+          "fontWeight": {
+            "maximum": 900,
+            "minimum": 100,
+            "type": "integer"
+          },
+          "highlightColor": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "letterSpacing": {
+            "description": "Base caption glyph spacing in pixels.",
+            "maximum": 20,
+            "minimum": -5,
+            "type": "number"
+          },
+          "lineGapEm": {
+            "description": "Gap between caption lines as a multiple of base font size; default 0.25.",
+            "maximum": 2,
+            "minimum": 0,
+            "type": "number"
+          },
+          "maxWidthPercent": {
+            "exclusiveMinimum": 0,
+            "maximum": 100,
+            "type": "number"
+          },
+          "plate": {
+            "enum": [
+              "glass",
+              "solid",
+              "none"
+            ],
+            "type": "string"
+          },
+          "position": {
+            "enum": [
+              "top",
+              "center",
+              "bottom"
+            ],
+            "type": "string"
+          },
+          "region": {
+            "additionalProperties": {},
+            "description": "Optional caption layout box {x,y,w,h} in normalized output-frame coordinates. Overrides position; text starts at its top edge and wraps/pages within its width and height.",
+            "properties": {
+              "h": {
+                "exclusiveMinimum": 0,
+                "maximum": 1,
+                "type": "number"
+              },
+              "w": {
+                "exclusiveMinimum": 0,
+                "maximum": 1,
+                "type": "number"
+              },
+              "x": {
+                "maximum": 1,
+                "minimum": 0,
+                "type": "number"
+              },
+              "y": {
+                "maximum": 1,
+                "minimum": 0,
+                "type": "number"
+              }
+            },
+            "required": [
+              "x",
+              "y",
+              "w",
+              "h"
+            ],
+            "type": "object"
+          },
+          "textTransform": {
+            "enum": [
+              "none",
+              "uppercase",
+              "capitalize"
+            ],
+            "type": "string"
+          },
+          "wordGapEm": {
+            "description": "Gap between caption runs as a multiple of base font size; default 0.35.",
+            "maximum": 2,
+            "minimum": 0,
+            "type": "number"
+          }
+        },
+        "type": "object"
+      },
+      "type": {
+        "const": "setCaptionStyle",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "style"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Set the caption compositing plane. Use `behind-subject` to place captions behind the segmented foreground subject; use `front` for conventional captions above all video layers.",
+    "properties": {
+      "type": {
+        "const": "setCaptionDepth",
+        "type": "string"
+      },
+      "zPlane": {
+        "enum": [
+          "front",
+          "behind-subject"
+        ],
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "zPlane"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Replace the caption SEGMENTS wholesale — author the word-timed caption layer directly (each segment = one sentence/page of `words` with timeline-ms `startMs`/`endMs`, optional `emphasis`). This is how a client with its OWN word timings (e.g. a generated VO take) gets word-synced captions without a source transcript; the compose lane's transcript slice writes the same layer. `style`, when given, merges with setCaptionStyle semantics; an omitted style keeps the existing one. Renderer paginates within a segment and never pools words across two — keep segments sentence-bounded.",
+    "properties": {
+      "segments": {
+        "items": {
+          "additionalProperties": {},
+          "properties": {
+            "words": {
+              "items": {
+                "additionalProperties": {},
+                "properties": {
+                  "annotate": {
+                    "enum": [
+                      "circle",
+                      "underline"
+                    ],
+                    "type": "string"
+                  },
+                  "emphasis": {
+                    "type": "boolean"
+                  },
+                  "endMs": {
+                    "description": "Word end on the composition timeline, in milliseconds.",
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "startMs": {
+                    "description": "Word start on the composition timeline, in milliseconds.",
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "text": {
+                    "minLength": 1,
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "text",
+                  "startMs",
+                  "endMs"
+                ],
+                "type": "object"
+              },
+              "type": "array"
+            }
+          },
+          "required": [
+            "words"
+          ],
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "style": {
+        "additionalProperties": {},
+        "properties": {
+          "annotationColor": {
+            "type": "string"
+          },
+          "annotationStrokeWidth": {
+            "description": "Annotation stroke width in its 100×100 SVG coordinate system; default 4.",
+            "maximum": 12,
+            "minimum": 0.5,
+            "type": "number"
+          },
+          "annotationTexture": {
+            "description": "Native annotation stroke finish; default clean.",
+            "enum": [
+              "clean",
+              "pencil"
+            ],
+            "type": "string"
+          },
+          "backgroundColor": {
+            "type": "string"
+          },
+          "color": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "emphasisColor": {
+            "type": "string"
+          },
+          "emphasisFontFamily": {
+            "type": "string"
+          },
+          "emphasisFontStyle": {
+            "enum": [
+              "normal",
+              "italic"
+            ],
+            "type": "string"
+          },
+          "emphasisFontWeight": {
+            "maximum": 900,
+            "minimum": 100,
+            "type": "integer"
+          },
+          "emphasisGradient": {
+            "type": "string"
+          },
+          "emphasisLetterSpacing": {
+            "type": "number"
+          },
+          "emphasisPlate": {
+            "type": "boolean"
+          },
+          "emphasisPlateAltColor": {
+            "type": "string"
+          },
+          "emphasisPlateAltTextColor": {
+            "type": "string"
+          },
+          "emphasisPlateColor": {
+            "type": "string"
+          },
+          "emphasisPlatePadX": {
+            "type": "number"
+          },
+          "emphasisPlatePadY": {
+            "type": "number"
+          },
+          "emphasisPlateRadius": {
+            "minimum": 0,
+            "type": "number"
+          },
+          "emphasisPlateReveal": {
+            "description": "Grow a shared emphasis plate as saved words appear while reserving its final layout width.",
+            "type": "boolean"
+          },
+          "emphasisPlateTextColor": {
+            "type": "string"
+          },
+          "emphasisScale": {
+            "exclusiveMinimum": 0,
+            "type": "number"
+          },
+          "emphasisTextTransform": {
+            "enum": [
+              "none",
+              "uppercase",
+              "capitalize"
+            ],
+            "type": "string"
+          },
+          "entrance": {
+            "enum": [
+              "none",
+              "fade",
+              "word-pop",
+              "stagger-up"
+            ],
+            "type": "string"
+          },
+          "entranceMs": {
+            "minimum": 0,
+            "type": "number"
+          },
+          "entranceStaggerMs": {
+            "minimum": 0,
+            "type": "number"
+          },
+          "exitMs": {
+            "minimum": 0,
+            "type": "number"
+          },
+          "fontFamily": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "fontSize": {
+            "description": "Font size as % of composition height (1-15, default 5). NOT px.",
+            "maximum": 15,
+            "minimum": 1,
+            "type": "number"
+          },
+          "fontWeight": {
+            "maximum": 900,
+            "minimum": 100,
+            "type": "integer"
+          },
+          "highlightColor": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "letterSpacing": {
+            "description": "Base caption glyph spacing in pixels.",
+            "maximum": 20,
+            "minimum": -5,
+            "type": "number"
+          },
+          "lineGapEm": {
+            "description": "Gap between caption lines as a multiple of base font size; default 0.25.",
+            "maximum": 2,
+            "minimum": 0,
+            "type": "number"
+          },
+          "maxWidthPercent": {
+            "exclusiveMinimum": 0,
+            "maximum": 100,
+            "type": "number"
+          },
+          "plate": {
+            "enum": [
+              "glass",
+              "solid",
+              "none"
+            ],
+            "type": "string"
+          },
+          "position": {
+            "enum": [
+              "top",
+              "center",
+              "bottom"
+            ],
+            "type": "string"
+          },
+          "region": {
+            "additionalProperties": {},
+            "description": "Optional caption layout box {x,y,w,h} in normalized output-frame coordinates. Overrides position; text starts at its top edge and wraps/pages within its width and height.",
+            "properties": {
+              "h": {
+                "exclusiveMinimum": 0,
+                "maximum": 1,
+                "type": "number"
+              },
+              "w": {
+                "exclusiveMinimum": 0,
+                "maximum": 1,
+                "type": "number"
+              },
+              "x": {
+                "maximum": 1,
+                "minimum": 0,
+                "type": "number"
+              },
+              "y": {
+                "maximum": 1,
+                "minimum": 0,
+                "type": "number"
+              }
+            },
+            "required": [
+              "x",
+              "y",
+              "w",
+              "h"
+            ],
+            "type": "object"
+          },
+          "textTransform": {
+            "enum": [
+              "none",
+              "uppercase",
+              "capitalize"
+            ],
+            "type": "string"
+          },
+          "wordGapEm": {
+            "description": "Gap between caption runs as a multiple of base font size; default 0.35.",
+            "maximum": 2,
+            "minimum": 0,
+            "type": "number"
+          }
+        },
+        "type": "object"
+      },
+      "type": {
+        "const": "setCaptions",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "segments"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Replace native caption placements without changing transcript words or timings. Each layout references a half-open word-index range in one saved segment; a one-word range is valid. region places that group independently, optional bounded scale/rotation/style changes its look, and holdThroughWordIndex keeps it visible through a later saved word in the same segment. All words in a placed range occupy one page; rendering refuses a range that cannot fit its box, so enlarge region or split the range. The box reserves horizontal space of 1.6 font sizes and vertical space of 0.8 font sizes for padding, with at most three lines. Unreferenced words keep the default caption layout. Word ranges must not overlap. Reapply after caption regeneration or timeline cuts.",
+    "properties": {
+      "layouts": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "holdThroughWordIndex": {
+              "description": "Inclusive saved-word index in this segment. The layout stays visible until that word ends.",
+              "maximum": 9007199254740991,
+              "minimum": 0,
+              "type": "integer"
+            },
+            "region": {
+              "additionalProperties": {},
+              "properties": {
+                "h": {
+                  "exclusiveMinimum": 0,
+                  "maximum": 1,
+                  "type": "number"
+                },
+                "w": {
+                  "exclusiveMinimum": 0,
+                  "maximum": 1,
+                  "type": "number"
+                },
+                "x": {
+                  "maximum": 1,
+                  "minimum": 0,
+                  "type": "number"
+                },
+                "y": {
+                  "maximum": 1,
+                  "minimum": 0,
+                  "type": "number"
+                }
+              },
+              "required": [
+                "x",
+                "y",
+                "w",
+                "h"
+              ],
+              "type": "object"
+            },
+            "rotation": {
+              "maximum": 45,
+              "minimum": -45,
+              "type": "number"
+            },
+            "scale": {
+              "maximum": 4,
+              "minimum": 0.25,
+              "type": "number"
+            },
+            "segmentIndex": {
+              "maximum": 9007199254740991,
+              "minimum": 0,
+              "type": "integer"
+            },
+            "style": {
+              "additionalProperties": false,
+              "properties": {
+                "annotationColor": {
+                  "type": "string"
+                },
+                "annotationStrokeWidth": {
+                  "description": "Annotation stroke width in its 100×100 SVG coordinate system; default 4.",
+                  "maximum": 12,
+                  "minimum": 0.5,
+                  "type": "number"
+                },
+                "annotationTexture": {
+                  "description": "Native annotation stroke finish; default clean.",
+                  "enum": [
+                    "clean",
+                    "pencil"
+                  ],
+                  "type": "string"
+                },
+                "backgroundColor": {
+                  "type": "string"
+                },
+                "color": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "emphasisColor": {
+                  "type": "string"
+                },
+                "emphasisFontFamily": {
+                  "type": "string"
+                },
+                "emphasisFontStyle": {
+                  "enum": [
+                    "normal",
+                    "italic"
+                  ],
+                  "type": "string"
+                },
+                "emphasisFontWeight": {
+                  "maximum": 900,
+                  "minimum": 100,
+                  "type": "integer"
+                },
+                "emphasisLetterSpacing": {
+                  "type": "number"
+                },
+                "emphasisPlate": {
+                  "type": "boolean"
+                },
+                "emphasisPlateAltColor": {
+                  "type": "string"
+                },
+                "emphasisPlateAltTextColor": {
+                  "type": "string"
+                },
+                "emphasisPlateColor": {
+                  "type": "string"
+                },
+                "emphasisPlatePadX": {
+                  "type": "number"
+                },
+                "emphasisPlatePadY": {
+                  "type": "number"
+                },
+                "emphasisPlateRadius": {
+                  "minimum": 0,
+                  "type": "number"
+                },
+                "emphasisPlateReveal": {
+                  "description": "Grow a shared emphasis plate as saved words appear while reserving its final layout width.",
+                  "type": "boolean"
+                },
+                "emphasisPlateTextColor": {
+                  "type": "string"
+                },
+                "emphasisScale": {
+                  "exclusiveMinimum": 0,
+                  "type": "number"
+                },
+                "emphasisTextTransform": {
+                  "enum": [
+                    "none",
+                    "uppercase",
+                    "capitalize"
+                  ],
+                  "type": "string"
+                },
+                "entrance": {
+                  "enum": [
+                    "none",
+                    "fade",
+                    "word-pop",
+                    "stagger-up"
+                  ],
+                  "type": "string"
+                },
+                "entranceMs": {
+                  "minimum": 0,
+                  "type": "number"
+                },
+                "entranceStaggerMs": {
+                  "minimum": 0,
+                  "type": "number"
+                },
+                "exitMs": {
+                  "minimum": 0,
+                  "type": "number"
+                },
+                "fontFamily": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "fontSize": {
+                  "description": "Font size as % of composition height (1-15, default 5). NOT px.",
+                  "maximum": 15,
+                  "minimum": 1,
+                  "type": "number"
+                },
+                "fontWeight": {
+                  "maximum": 900,
+                  "minimum": 100,
+                  "type": "integer"
+                },
+                "highlightColor": {
+                  "minLength": 1,
+                  "type": "string"
+                },
+                "letterSpacing": {
+                  "description": "Base caption glyph spacing in pixels.",
+                  "maximum": 20,
+                  "minimum": -5,
+                  "type": "number"
+                },
+                "lineGapEm": {
+                  "description": "Gap between caption lines as a multiple of base font size; default 0.25.",
+                  "maximum": 2,
+                  "minimum": 0,
+                  "type": "number"
+                },
+                "plate": {
+                  "enum": [
+                    "glass",
+                    "solid",
+                    "none"
+                  ],
+                  "type": "string"
+                },
+                "textTransform": {
+                  "enum": [
+                    "none",
+                    "uppercase",
+                    "capitalize"
+                  ],
+                  "type": "string"
+                },
+                "wordGapEm": {
+                  "description": "Gap between caption runs as a multiple of base font size; default 0.35.",
+                  "maximum": 2,
+                  "minimum": 0,
+                  "type": "number"
+                }
+              },
+              "type": "object"
+            },
+            "wordEndIndex": {
+              "description": "Exclusive word index in the saved caption segment.",
+              "exclusiveMinimum": 0,
+              "maximum": 9007199254740991,
+              "type": "integer"
+            },
+            "wordMarks": {
+              "items": {
+                "additionalProperties": false,
+                "properties": {
+                  "annotate": {
+                    "anyOf": [
+                      {
+                        "enum": [
+                          "circle",
+                          "underline"
+                        ],
+                        "type": "string"
+                      },
+                      {
+                        "type": "null"
+                      }
+                    ]
+                  },
+                  "emphasis": {
+                    "type": "boolean"
+                  },
+                  "wordIndex": {
+                    "maximum": 9007199254740991,
+                    "minimum": 0,
+                    "type": "integer"
+                  }
+                },
+                "required": [
+                  "wordIndex"
+                ],
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "wordStartIndex": {
+              "maximum": 9007199254740991,
+              "minimum": 0,
+              "type": "integer"
+            }
+          },
+          "required": [
+            "segmentIndex",
+            "wordStartIndex",
+            "wordEndIndex",
+            "region"
+          ],
+          "type": "object"
+        },
+        "type": "array"
+      },
+      "type": {
+        "const": "setCaptionLayouts",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "layouts"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Author a scene shot and place it on a dedicated overlay track. The host validates the scene, generates and registers an immutable wrapper component source, and emits the ordinary track/clip operations carrying `props.componentRef` — you edit a scene SPEC, never wrapper TSX or a source hash. Registration and the composition update are ONE undoable edit; a failure publishes nothing and leaves no clip pointing at an unresolved source. Pass EXACTLY ONE of `trackId` (an existing dedicated scene track) or `newTrack: true` (mint one). That track holds scene-shot clips and gaps only — no generic component/primitive/media clips in v1 — and existing generic overlay tracks are unaffected. Scene clips use front zPlane and full-frame placement: outer per-clip `region`, `position`, `scale`, `rotation`, `fit`, `effects`, keyframes (`tweens`/`automation`), `params.transition`, `params.sequenceGroup` and internal fadeIn/fadeOut are REFUSED with a path, because the shot's own layer transforms are the single transform owner. TEXT: `space: \"screen\"` text is composed above the world result, stays fixed in the frame and stays sharp through focus; `space: \"world\"` text is rasterized into the 3D scene, moves with the camera and is occluded by geometry. Screenshots and world text are UNLIT and colour-managed so product UI colours are not tinted by the studio lighting, while device bodies are lit and cast shadows; an unlit surface still occludes. SCOPE GAP (pre-existing, neither closed nor changed by scene shots): global wrap effects — composition-level grades and camera effects — do not reach front-overlay clips, so they do not affect a scene shot. Author the look INSIDE the shot (`post.grain`, `post.vignette`, `post.focus`, `backdrop`, `environment`) instead. DISCOVERY: there is no built-in scene primitive to look up in list_catalog; the wrapper this operation registers appears afterwards as an ordinary INSTALLED component under the existing catalog rules. ASSETS: `assets` binds each slot name a layer references to a media id in the same project, and the slot's declared KIND decides what it admits — an image slot takes PNG, JPEG or WebP, a video slot MP4 or WebM. Binding the wrong kind is refused with the slot's path.",
+    "properties": {
+      "assets": {
+        "additionalProperties": {
+          "minLength": 1,
+          "type": "string"
+        },
+        "properties": {},
+        "propertyNames": {
+          "minLength": 1,
+          "type": "string"
+        },
+        "type": "object"
+      },
+      "clipId": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "duration": {
+        "exclusiveMinimum": 0,
+        "type": "number"
+      },
+      "newTrack": {
+        "type": "boolean"
+      },
+      "newTrackId": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "scene": {
+        "additionalProperties": false,
+        "description": "A version-2 scene shot: a self-contained 3D world-object shot that scene.add / scene.update materializes into an ordinary component clip. The shot owns its layers, camera, lighting, backdrop and normalized local animation; the composition owns start, duration, ordering, cuts and transitions. Coordinates are REFERENCE PIXELS: origin at frame centre, +X right, +Y down, +Z toward the viewer. referenceSize must have the SAME aspect ratio as the composition format; mismatch fails instead of cropping. At equal aspect ratio the shot scales uniformly by outputWidth/referenceWidth. A segment's easing belongs to the keyframe it ARRIVES at; the first keyframe has no easing. Authoring limits: 32 layers, 4 devices, 16 distinct image slots, 256 keyframes per channel, 2048 keyframes per shot. Version 2 supports nested groups, procedural slab/page/phone/laptop objects, screen- and world-space text, admitted image/component/video surfaces, fixed photographic and generated studio environments, transparent/solid/linear/radial backdrops, constraints, focus, grain and vignette. Raw HTML, custom shader props, imported GLB models, arbitrary external HDR environments, skeletal animation and physics are refused with an exact field path.",
+        "properties": {
+          "animation": {
+            "default": [],
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "keyframes": {
+                  "items": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "at": {
+                        "maximum": 1,
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "easing": {
+                        "oneOf": [
+                          {
+                            "additionalProperties": false,
+                            "properties": {
+                              "kind": {
+                                "const": "linear",
+                                "type": "string"
+                              }
+                            },
+                            "required": [
+                              "kind"
+                            ],
+                            "type": "object"
+                          },
+                          {
+                            "additionalProperties": false,
+                            "properties": {
+                              "kind": {
+                                "const": "hold",
+                                "type": "string"
+                              }
+                            },
+                            "required": [
+                              "kind"
+                            ],
+                            "type": "object"
+                          },
+                          {
+                            "additionalProperties": false,
+                            "properties": {
+                              "kind": {
+                                "const": "bezier",
+                                "type": "string"
+                              },
+                              "x1": {
+                                "maximum": 1,
+                                "minimum": 0,
+                                "type": "number"
+                              },
+                              "x2": {
+                                "maximum": 1,
+                                "minimum": 0,
+                                "type": "number"
+                              },
+                              "y1": {
+                                "maximum": 5,
+                                "minimum": -4,
+                                "type": "number"
+                              },
+                              "y2": {
+                                "maximum": 5,
+                                "minimum": -4,
+                                "type": "number"
+                              }
+                            },
+                            "required": [
+                              "kind",
+                              "x1",
+                              "y1",
+                              "x2",
+                              "y2"
+                            ],
+                            "type": "object"
+                          }
+                        ]
+                      },
+                      "value": {
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "at",
+                      "value"
+                    ],
+                    "type": "object"
+                  },
+                  "maxItems": 256,
+                  "minItems": 1,
+                  "type": "array"
+                },
+                "property": {
+                  "enum": [
+                    "positionX",
+                    "positionY",
+                    "positionZ",
+                    "rotationX",
+                    "rotationY",
+                    "rotationZ",
+                    "fov",
+                    "scale",
+                    "opacity",
+                    "openAngle",
+                    "x",
+                    "y",
+                    "rotation",
+                    "intensity",
+                    "distance",
+                    "range",
+                    "maxBlur"
+                  ],
+                  "type": "string"
+                },
+                "target": {
+                  "oneOf": [
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "kind": {
+                          "const": "camera",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "kind"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "kind": {
+                          "const": "layer",
+                          "type": "string"
+                        },
+                        "layerId": {
+                          "maxLength": 64,
+                          "minLength": 1,
+                          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "kind",
+                        "layerId"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "kind": {
+                          "const": "environment",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "kind"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "kind": {
+                          "const": "focus",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "kind"
+                      ],
+                      "type": "object"
+                    }
+                  ]
+                }
+              },
+              "required": [
+                "target",
+                "property",
+                "keyframes"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "backdrop": {
+            "default": {
+              "kind": "transparent"
+            },
+            "oneOf": [
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "kind": {
+                    "const": "transparent",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "kind"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "color": {
+                    "anyOf": [
+                      {
+                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
+                        "type": "string"
+                      },
+                      {
+                        "enum": [
+                          "$brand:colors.background",
+                          "$brand:colors.surface",
+                          "$brand:colors.text",
+                          "$brand:colors.textMuted",
+                          "$brand:colors.accent",
+                          "$brand:colors.accentStrong",
+                          "$brand:colors.accentSoft",
+                          "$brand:colors.success",
+                          "$brand:colors.warning",
+                          "$brand:colors.danger"
+                        ],
+                        "type": "string"
+                      }
+                    ]
+                  },
+                  "kind": {
+                    "const": "solid",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "color"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "angle": {
+                    "default": 0,
+                    "type": "number"
+                  },
+                  "kind": {
+                    "const": "linear",
+                    "type": "string"
+                  },
+                  "stops": {
+                    "items": {
+                      "additionalProperties": false,
+                      "properties": {
+                        "at": {
+                          "maximum": 1,
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "color": {
+                          "anyOf": [
+                            {
+                              "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
+                              "type": "string"
+                            },
+                            {
+                              "enum": [
+                                "$brand:colors.background",
+                                "$brand:colors.surface",
+                                "$brand:colors.text",
+                                "$brand:colors.textMuted",
+                                "$brand:colors.accent",
+                                "$brand:colors.accentStrong",
+                                "$brand:colors.accentSoft",
+                                "$brand:colors.success",
+                                "$brand:colors.warning",
+                                "$brand:colors.danger"
+                              ],
+                              "type": "string"
+                            }
+                          ]
+                        }
+                      },
+                      "required": [
+                        "at",
+                        "color"
+                      ],
+                      "type": "object"
+                    },
+                    "maxItems": 8,
+                    "minItems": 2,
+                    "type": "array"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "stops"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "at": {
+                    "default": [
+                      0.5,
+                      0.5
+                    ],
+                    "items": false,
+                    "maxItems": 2,
+                    "minItems": 2,
+                    "prefixItems": [
+                      {
+                        "maximum": 1,
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      {
+                        "maximum": 1,
+                        "minimum": 0,
+                        "type": "number"
+                      }
+                    ],
+                    "type": "array"
+                  },
+                  "kind": {
+                    "const": "radial",
+                    "type": "string"
+                  },
+                  "stops": {
+                    "items": {
+                      "additionalProperties": false,
+                      "properties": {
+                        "at": {
+                          "maximum": 1,
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "color": {
+                          "anyOf": [
+                            {
+                              "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
+                              "type": "string"
+                            },
+                            {
+                              "enum": [
+                                "$brand:colors.background",
+                                "$brand:colors.surface",
+                                "$brand:colors.text",
+                                "$brand:colors.textMuted",
+                                "$brand:colors.accent",
+                                "$brand:colors.accentStrong",
+                                "$brand:colors.accentSoft",
+                                "$brand:colors.success",
+                                "$brand:colors.warning",
+                                "$brand:colors.danger"
+                              ],
+                              "type": "string"
+                            }
+                          ]
+                        }
+                      },
+                      "required": [
+                        "at",
+                        "color"
+                      ],
+                      "type": "object"
+                    },
+                    "maxItems": 8,
+                    "minItems": 2,
+                    "type": "array"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "stops"
+                ],
+                "type": "object"
+              }
+            ]
+          },
+          "camera": {
+            "additionalProperties": false,
+            "properties": {
+              "fov": {
+                "maximum": 1.3962634015954636,
+                "minimum": 0.3141592653589793,
+                "type": "number"
+              },
+              "position": {
+                "items": false,
+                "maxItems": 3,
+                "minItems": 3,
+                "prefixItems": [
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "number"
+                  }
+                ],
+                "type": "array"
+              },
+              "rotation": {
+                "items": false,
+                "maxItems": 3,
+                "minItems": 3,
+                "prefixItems": [
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "number"
+                  }
+                ],
+                "type": "array"
+              }
+            },
+            "type": "object"
+          },
+          "constraints": {
+            "default": [],
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "gap": {
+                  "exclusiveMinimum": 0,
+                  "type": "number"
+                },
+                "kind": {
+                  "const": "minSeparation",
+                  "type": "string"
+                },
+                "objects": {
+                  "items": {
+                    "maxLength": 64,
+                    "minLength": 1,
+                    "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
+                    "type": "string"
+                  },
+                  "minItems": 2,
+                  "type": "array"
+                }
+              },
+              "required": [
+                "kind",
+                "objects",
+                "gap"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "environment": {
+            "anyOf": [
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "floorY": {
+                    "default": -420,
+                    "type": "number"
+                  },
+                  "intensity": {
+                    "default": 1,
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "kind": {
+                    "const": "studio",
+                    "type": "string"
+                  },
+                  "lightingProfile": {
+                    "default": "studio",
+                    "enum": [
+                      "studio",
+                      "studio-edge"
+                    ],
+                    "type": "string"
+                  },
+                  "preset": {
+                    "default": "soft",
+                    "enum": [
+                      "soft",
+                      "key",
+                      "rim"
+                    ],
+                    "type": "string"
+                  },
+                  "shadowOpacity": {
+                    "default": 0.5,
+                    "maximum": 1,
+                    "minimum": 0,
+                    "type": "number"
+                  }
+                },
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "kind": {
+                    "const": "photographic-studio-v1",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "kind"
+                ],
+                "type": "object"
+              }
+            ],
+            "default": {
+              "floorY": -420,
+              "intensity": 1,
+              "lightingProfile": "studio",
+              "preset": "soft",
+              "shadowOpacity": 0.5
+            }
+          },
+          "layers": {
+            "items": {
+              "$ref": "#/$defs/__schema1"
+            },
+            "minItems": 1,
+            "type": "array"
+          },
+          "post": {
+            "additionalProperties": false,
+            "default": {
+              "focus": null,
+              "grain": 0,
+              "vignette": 0
+            },
+            "properties": {
+              "focus": {
+                "anyOf": [
+                  {
+                    "additionalProperties": false,
+                    "properties": {
+                      "distance": {
+                        "exclusiveMinimum": 0,
+                        "type": "number"
+                      },
+                      "maxBlur": {
+                        "maximum": 64,
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "range": {
+                        "exclusiveMinimum": 0,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "distance",
+                      "range",
+                      "maxBlur"
+                    ],
+                    "type": "object"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "default": null
+              },
+              "grain": {
+                "default": 0,
+                "maximum": 0.5,
+                "minimum": 0,
+                "type": "number"
+              },
+              "vignette": {
+                "default": 0,
+                "maximum": 1,
+                "minimum": 0,
+                "type": "number"
+              }
+            },
+            "type": "object"
+          },
+          "referenceSize": {
+            "additionalProperties": false,
+            "properties": {
+              "height": {
+                "maximum": 8192,
+                "minimum": 16,
+                "type": "integer"
+              },
+              "width": {
+                "maximum": 8192,
+                "minimum": 16,
+                "type": "integer"
+              }
+            },
+            "required": [
+              "width",
+              "height"
+            ],
+            "type": "object"
+          },
+          "version": {
+            "const": 2,
+            "type": "number"
+          }
+        },
+        "required": [
+          "version",
+          "referenceSize",
+          "layers"
+        ],
+        "type": "object"
+      },
+      "startTime": {
+        "minimum": 0,
+        "type": "number"
+      },
+      "trackId": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "transitionIn": {
+        "additionalProperties": {},
+        "properties": {
+          "component": {
+            "oneOf": [
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "assets": {
+                    "additionalProperties": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "maxLength": 256,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "componentId": {
+                    "maxLength": 256,
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "mediaBindings": {
+                    "additionalProperties": {
+                      "items": {
+                        "maxLength": 128,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "array"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "maxLength": 128,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "params": {
+                    "additionalProperties": {
+                      "$ref": "#/$defs/__schema0"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "seed": {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "sourceVersionId": {
+                    "pattern": "^[a-f0-9]{64}$",
+                    "type": "string"
+                  },
+                  "version": {
+                    "const": 3,
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "version",
+                  "componentId",
+                  "sourceVersionId",
+                  "params",
+                  "seed"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "assets": {
+                    "additionalProperties": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "maxLength": 256,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "componentId": {
+                    "maxLength": 256,
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "mediaBindings": {
+                    "additionalProperties": {
+                      "items": {
+                        "maxLength": 128,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "array"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "maxLength": 128,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "params": {
+                    "additionalProperties": {
+                      "$ref": "#/$defs/__schema0"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "seed": {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "sourceVersionId": {
+                    "pattern": "^[a-f0-9]{64}$",
+                    "type": "string"
+                  },
+                  "version": {
+                    "const": 4,
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "version",
+                  "componentId",
+                  "sourceVersionId",
+                  "params",
+                  "seed"
+                ],
+                "type": "object"
+              }
+            ]
+          },
+          "duration": {
+            "exclusiveMinimum": 0,
+            "type": "number"
+          },
+          "fromClipId": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "handlePolicy": {
+            "const": "outgoing-overrun-at-cut-v1",
+            "type": "string"
+          },
+          "id": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "toClipId": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "type": {
+            "minLength": 1,
+            "type": "string"
+          }
+        },
+        "required": [
+          "type",
+          "duration"
+        ],
+        "type": "object"
+      },
+      "type": {
+        "const": "scene.add",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId",
+      "startTime",
+      "duration",
+      "scene",
+      "assets"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Revise a scene shot in place by clip id. Send a replacement `scene` and/or `assets`; timing changes use the ordinary clip timing fields (`startTime`, `duration`, `transitionIn`). Omitted fields keep their persisted values and the MERGED result is re-validated as a whole, so a partial edit cannot leave the shot invalid. Changing only values or asset IDs updates props and bindings and REUSES the pinned source; changing the referenced SLOT SET regenerates the wrapper manifest and registers a new immutable source version atomically. Undo restores the source reference, spec, bindings and timing together. Topology, asset bindings, text content, font properties, device kind and colours are STATIC within a shot's animation — change them here (a revised spec) rather than trying to animate them. This is not a source trim or slip: a shortened or extended clip resamples the SAME normalized animation over its new duration, and trim/slip requests on generated animation are rejected rather than reinterpreted as media trims. In one batch, `scene.update` may target a shot added by an earlier `scene.add`. ASSETS: `assets` binds each slot name a layer references to a media id in the same project, and the slot's declared KIND decides what it admits — an image slot takes PNG, JPEG or WebP, a video slot MP4 or WebM. Binding the wrong kind is refused with the slot's path.",
+    "properties": {
+      "assets": {
+        "additionalProperties": {
+          "minLength": 1,
+          "type": "string"
+        },
+        "properties": {},
+        "propertyNames": {
+          "minLength": 1,
+          "type": "string"
+        },
+        "type": "object"
+      },
+      "clipId": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "duration": {
+        "exclusiveMinimum": 0,
+        "type": "number"
+      },
+      "scene": {
+        "additionalProperties": false,
+        "description": "A version-2 scene shot: a self-contained 3D world-object shot that scene.add / scene.update materializes into an ordinary component clip. The shot owns its layers, camera, lighting, backdrop and normalized local animation; the composition owns start, duration, ordering, cuts and transitions. Coordinates are REFERENCE PIXELS: origin at frame centre, +X right, +Y down, +Z toward the viewer. referenceSize must have the SAME aspect ratio as the composition format; mismatch fails instead of cropping. At equal aspect ratio the shot scales uniformly by outputWidth/referenceWidth. A segment's easing belongs to the keyframe it ARRIVES at; the first keyframe has no easing. Authoring limits: 32 layers, 4 devices, 16 distinct image slots, 256 keyframes per channel, 2048 keyframes per shot. Version 2 supports nested groups, procedural slab/page/phone/laptop objects, screen- and world-space text, admitted image/component/video surfaces, fixed photographic and generated studio environments, transparent/solid/linear/radial backdrops, constraints, focus, grain and vignette. Raw HTML, custom shader props, imported GLB models, arbitrary external HDR environments, skeletal animation and physics are refused with an exact field path.",
+        "properties": {
+          "animation": {
+            "default": [],
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "keyframes": {
+                  "items": {
+                    "additionalProperties": false,
+                    "properties": {
+                      "at": {
+                        "maximum": 1,
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "easing": {
+                        "oneOf": [
+                          {
+                            "additionalProperties": false,
+                            "properties": {
+                              "kind": {
+                                "const": "linear",
+                                "type": "string"
+                              }
+                            },
+                            "required": [
+                              "kind"
+                            ],
+                            "type": "object"
+                          },
+                          {
+                            "additionalProperties": false,
+                            "properties": {
+                              "kind": {
+                                "const": "hold",
+                                "type": "string"
+                              }
+                            },
+                            "required": [
+                              "kind"
+                            ],
+                            "type": "object"
+                          },
+                          {
+                            "additionalProperties": false,
+                            "properties": {
+                              "kind": {
+                                "const": "bezier",
+                                "type": "string"
+                              },
+                              "x1": {
+                                "maximum": 1,
+                                "minimum": 0,
+                                "type": "number"
+                              },
+                              "x2": {
+                                "maximum": 1,
+                                "minimum": 0,
+                                "type": "number"
+                              },
+                              "y1": {
+                                "maximum": 5,
+                                "minimum": -4,
+                                "type": "number"
+                              },
+                              "y2": {
+                                "maximum": 5,
+                                "minimum": -4,
+                                "type": "number"
+                              }
+                            },
+                            "required": [
+                              "kind",
+                              "x1",
+                              "y1",
+                              "x2",
+                              "y2"
+                            ],
+                            "type": "object"
+                          }
+                        ]
+                      },
+                      "value": {
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "at",
+                      "value"
+                    ],
+                    "type": "object"
+                  },
+                  "maxItems": 256,
+                  "minItems": 1,
+                  "type": "array"
+                },
+                "property": {
+                  "enum": [
+                    "positionX",
+                    "positionY",
+                    "positionZ",
+                    "rotationX",
+                    "rotationY",
+                    "rotationZ",
+                    "fov",
+                    "scale",
+                    "opacity",
+                    "openAngle",
+                    "x",
+                    "y",
+                    "rotation",
+                    "intensity",
+                    "distance",
+                    "range",
+                    "maxBlur"
+                  ],
+                  "type": "string"
+                },
+                "target": {
+                  "oneOf": [
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "kind": {
+                          "const": "camera",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "kind"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "kind": {
+                          "const": "layer",
+                          "type": "string"
+                        },
+                        "layerId": {
+                          "maxLength": 64,
+                          "minLength": 1,
+                          "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "kind",
+                        "layerId"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "kind": {
+                          "const": "environment",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "kind"
+                      ],
+                      "type": "object"
+                    },
+                    {
+                      "additionalProperties": false,
+                      "properties": {
+                        "kind": {
+                          "const": "focus",
+                          "type": "string"
+                        }
+                      },
+                      "required": [
+                        "kind"
+                      ],
+                      "type": "object"
+                    }
+                  ]
+                }
+              },
+              "required": [
+                "target",
+                "property",
+                "keyframes"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "backdrop": {
+            "default": {
+              "kind": "transparent"
+            },
+            "oneOf": [
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "kind": {
+                    "const": "transparent",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "kind"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "color": {
+                    "anyOf": [
+                      {
+                        "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
+                        "type": "string"
+                      },
+                      {
+                        "enum": [
+                          "$brand:colors.background",
+                          "$brand:colors.surface",
+                          "$brand:colors.text",
+                          "$brand:colors.textMuted",
+                          "$brand:colors.accent",
+                          "$brand:colors.accentStrong",
+                          "$brand:colors.accentSoft",
+                          "$brand:colors.success",
+                          "$brand:colors.warning",
+                          "$brand:colors.danger"
+                        ],
+                        "type": "string"
+                      }
+                    ]
+                  },
+                  "kind": {
+                    "const": "solid",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "color"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "angle": {
+                    "default": 0,
+                    "type": "number"
+                  },
+                  "kind": {
+                    "const": "linear",
+                    "type": "string"
+                  },
+                  "stops": {
+                    "items": {
+                      "additionalProperties": false,
+                      "properties": {
+                        "at": {
+                          "maximum": 1,
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "color": {
+                          "anyOf": [
+                            {
+                              "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
+                              "type": "string"
+                            },
+                            {
+                              "enum": [
+                                "$brand:colors.background",
+                                "$brand:colors.surface",
+                                "$brand:colors.text",
+                                "$brand:colors.textMuted",
+                                "$brand:colors.accent",
+                                "$brand:colors.accentStrong",
+                                "$brand:colors.accentSoft",
+                                "$brand:colors.success",
+                                "$brand:colors.warning",
+                                "$brand:colors.danger"
+                              ],
+                              "type": "string"
+                            }
+                          ]
+                        }
+                      },
+                      "required": [
+                        "at",
+                        "color"
+                      ],
+                      "type": "object"
+                    },
+                    "maxItems": 8,
+                    "minItems": 2,
+                    "type": "array"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "stops"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "at": {
+                    "default": [
+                      0.5,
+                      0.5
+                    ],
+                    "items": false,
+                    "maxItems": 2,
+                    "minItems": 2,
+                    "prefixItems": [
+                      {
+                        "maximum": 1,
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      {
+                        "maximum": 1,
+                        "minimum": 0,
+                        "type": "number"
+                      }
+                    ],
+                    "type": "array"
+                  },
+                  "kind": {
+                    "const": "radial",
+                    "type": "string"
+                  },
+                  "stops": {
+                    "items": {
+                      "additionalProperties": false,
+                      "properties": {
+                        "at": {
+                          "maximum": 1,
+                          "minimum": 0,
+                          "type": "number"
+                        },
+                        "color": {
+                          "anyOf": [
+                            {
+                              "pattern": "^#(?:[0-9a-fA-F]{6}|[0-9a-fA-F]{8})$",
+                              "type": "string"
+                            },
+                            {
+                              "enum": [
+                                "$brand:colors.background",
+                                "$brand:colors.surface",
+                                "$brand:colors.text",
+                                "$brand:colors.textMuted",
+                                "$brand:colors.accent",
+                                "$brand:colors.accentStrong",
+                                "$brand:colors.accentSoft",
+                                "$brand:colors.success",
+                                "$brand:colors.warning",
+                                "$brand:colors.danger"
+                              ],
+                              "type": "string"
+                            }
+                          ]
+                        }
+                      },
+                      "required": [
+                        "at",
+                        "color"
+                      ],
+                      "type": "object"
+                    },
+                    "maxItems": 8,
+                    "minItems": 2,
+                    "type": "array"
+                  }
+                },
+                "required": [
+                  "kind",
+                  "stops"
+                ],
+                "type": "object"
+              }
+            ]
+          },
+          "camera": {
+            "additionalProperties": false,
+            "properties": {
+              "fov": {
+                "maximum": 1.3962634015954636,
+                "minimum": 0.3141592653589793,
+                "type": "number"
+              },
+              "position": {
+                "items": false,
+                "maxItems": 3,
+                "minItems": 3,
+                "prefixItems": [
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "number"
+                  }
+                ],
+                "type": "array"
+              },
+              "rotation": {
+                "items": false,
+                "maxItems": 3,
+                "minItems": 3,
+                "prefixItems": [
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "number"
+                  },
+                  {
+                    "type": "number"
+                  }
+                ],
+                "type": "array"
+              }
+            },
+            "type": "object"
+          },
+          "constraints": {
+            "default": [],
+            "items": {
+              "additionalProperties": false,
+              "properties": {
+                "gap": {
+                  "exclusiveMinimum": 0,
+                  "type": "number"
+                },
+                "kind": {
+                  "const": "minSeparation",
+                  "type": "string"
+                },
+                "objects": {
+                  "items": {
+                    "maxLength": 64,
+                    "minLength": 1,
+                    "pattern": "^[A-Za-z0-9][A-Za-z0-9_-]*$",
+                    "type": "string"
+                  },
+                  "minItems": 2,
+                  "type": "array"
+                }
+              },
+              "required": [
+                "kind",
+                "objects",
+                "gap"
+              ],
+              "type": "object"
+            },
+            "type": "array"
+          },
+          "environment": {
+            "anyOf": [
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "floorY": {
+                    "default": -420,
+                    "type": "number"
+                  },
+                  "intensity": {
+                    "default": 1,
+                    "minimum": 0,
+                    "type": "number"
+                  },
+                  "kind": {
+                    "const": "studio",
+                    "type": "string"
+                  },
+                  "lightingProfile": {
+                    "default": "studio",
+                    "enum": [
+                      "studio",
+                      "studio-edge"
+                    ],
+                    "type": "string"
+                  },
+                  "preset": {
+                    "default": "soft",
+                    "enum": [
+                      "soft",
+                      "key",
+                      "rim"
+                    ],
+                    "type": "string"
+                  },
+                  "shadowOpacity": {
+                    "default": 0.5,
+                    "maximum": 1,
+                    "minimum": 0,
+                    "type": "number"
+                  }
+                },
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "kind": {
+                    "const": "photographic-studio-v1",
+                    "type": "string"
+                  }
+                },
+                "required": [
+                  "kind"
+                ],
+                "type": "object"
+              }
+            ],
+            "default": {
+              "floorY": -420,
+              "intensity": 1,
+              "lightingProfile": "studio",
+              "preset": "soft",
+              "shadowOpacity": 0.5
+            }
+          },
+          "layers": {
+            "items": {
+              "$ref": "#/$defs/__schema1"
+            },
+            "minItems": 1,
+            "type": "array"
+          },
+          "post": {
+            "additionalProperties": false,
+            "default": {
+              "focus": null,
+              "grain": 0,
+              "vignette": 0
+            },
+            "properties": {
+              "focus": {
+                "anyOf": [
+                  {
+                    "additionalProperties": false,
+                    "properties": {
+                      "distance": {
+                        "exclusiveMinimum": 0,
+                        "type": "number"
+                      },
+                      "maxBlur": {
+                        "maximum": 64,
+                        "minimum": 0,
+                        "type": "number"
+                      },
+                      "range": {
+                        "exclusiveMinimum": 0,
+                        "type": "number"
+                      }
+                    },
+                    "required": [
+                      "distance",
+                      "range",
+                      "maxBlur"
+                    ],
+                    "type": "object"
+                  },
+                  {
+                    "type": "null"
+                  }
+                ],
+                "default": null
+              },
+              "grain": {
+                "default": 0,
+                "maximum": 0.5,
+                "minimum": 0,
+                "type": "number"
+              },
+              "vignette": {
+                "default": 0,
+                "maximum": 1,
+                "minimum": 0,
+                "type": "number"
+              }
+            },
+            "type": "object"
+          },
+          "referenceSize": {
+            "additionalProperties": false,
+            "properties": {
+              "height": {
+                "maximum": 8192,
+                "minimum": 16,
+                "type": "integer"
+              },
+              "width": {
+                "maximum": 8192,
+                "minimum": 16,
+                "type": "integer"
+              }
+            },
+            "required": [
+              "width",
+              "height"
+            ],
+            "type": "object"
+          },
+          "version": {
+            "const": 2,
+            "type": "number"
+          }
+        },
+        "required": [
+          "version",
+          "referenceSize",
+          "layers"
+        ],
+        "type": "object"
+      },
+      "startTime": {
+        "minimum": 0,
+        "type": "number"
+      },
+      "transitionIn": {
+        "additionalProperties": {},
+        "properties": {
+          "component": {
+            "oneOf": [
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "assets": {
+                    "additionalProperties": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "maxLength": 256,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "componentId": {
+                    "maxLength": 256,
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "mediaBindings": {
+                    "additionalProperties": {
+                      "items": {
+                        "maxLength": 128,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "array"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "maxLength": 128,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "params": {
+                    "additionalProperties": {
+                      "$ref": "#/$defs/__schema0"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "seed": {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "sourceVersionId": {
+                    "pattern": "^[a-f0-9]{64}$",
+                    "type": "string"
+                  },
+                  "version": {
+                    "const": 3,
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "version",
+                  "componentId",
+                  "sourceVersionId",
+                  "params",
+                  "seed"
+                ],
+                "type": "object"
+              },
+              {
+                "additionalProperties": false,
+                "properties": {
+                  "assets": {
+                    "additionalProperties": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "maxLength": 256,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "componentId": {
+                    "maxLength": 256,
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "mediaBindings": {
+                    "additionalProperties": {
+                      "items": {
+                        "maxLength": 128,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "array"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "maxLength": 128,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "params": {
+                    "additionalProperties": {
+                      "$ref": "#/$defs/__schema0"
+                    },
+                    "properties": {},
+                    "propertyNames": {
+                      "type": "string"
+                    },
+                    "type": "object"
+                  },
+                  "seed": {
+                    "minLength": 1,
+                    "type": "string"
+                  },
+                  "sourceVersionId": {
+                    "pattern": "^[a-f0-9]{64}$",
+                    "type": "string"
+                  },
+                  "version": {
+                    "const": 4,
+                    "type": "number"
+                  }
+                },
+                "required": [
+                  "version",
+                  "componentId",
+                  "sourceVersionId",
+                  "params",
+                  "seed"
+                ],
+                "type": "object"
+              }
+            ]
+          },
+          "duration": {
+            "exclusiveMinimum": 0,
+            "type": "number"
+          },
+          "fromClipId": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "handlePolicy": {
+            "const": "outgoing-overrun-at-cut-v1",
+            "type": "string"
+          },
+          "id": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "toClipId": {
+            "minLength": 1,
+            "type": "string"
+          },
+          "type": {
+            "minLength": 1,
+            "type": "string"
+          }
+        },
+        "required": [
+          "type",
+          "duration"
+        ],
+        "type": "object"
+      },
+      "type": {
+        "const": "scene.update",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Materialize a clip's SOURCE-media temporal GRID as timeline markers — the rhythm authority you cut to. `grid:\"beat\"` reads a MUSIC bed's beat map (get_media_context.beatGrid), `grid:\"word\"` the VO word onsets (wordGrid); each grid point is projected from media time to TIMELINE time through the clip's placement (startTime, trim, playbackRate, excludedRanges) and written as a `kind:\"beat\"|\"word\"` marker (`metadata.sourceClipId` set). Points outside the clip's visible window are skipped. Re-running REPLACES the prior markers from the same clip+grid (idempotent). Land cuts and transition MIDPOINTS on the markers (a 0.5s transition starts 0.25s before its marker). `maxMarkers` (default 500, ceiling 2000) — exceeding it fails loud with the count. `grid:\"shot\"` is not yet exposed (shot_grid_unavailable). The target must be a media clip; absent evidence fails loud (grid_unavailable) naming how to get it (declare audioRole:\"music\" at ingest / transcribe).",
+    "properties": {
+      "clipId": {
+        "type": "string"
+      },
+      "grid": {
+        "enum": [
+          "beat",
+          "word",
+          "shot"
+        ],
+        "type": "string"
+      },
+      "maxMarkers": {
+        "exclusiveMinimum": 0,
+        "maximum": 2000,
+        "type": "integer"
+      },
+      "type": {
+        "const": "materializeGrid",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId",
+      "grid"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Attach caption CONTENT from the media's cached transcript — no pasting words. ROUTE-MATERIALIZED like materializeGrid: the server slices the word-timed transcript to `window` (source seconds; absent = the whole media), rebases times, sentence-splits into segments, and applies it as `setCaptions`. 422 media_no_transcript when the media has no transcript or no words in the window. For your OWN word timings use setCaptions directly. For edited multi-clip timelines, use captions.fromComposition after saving the edits; that operation projects all selected track clips, trims, exclusions, and placements.",
+    "properties": {
+      "mediaId": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "type": {
+        "const": "captions.fromTranscript",
+        "type": "string"
+      },
+      "window": {
+        "additionalProperties": false,
+        "properties": {
+          "endSec": {
+            "exclusiveMinimum": 0,
+            "type": "number"
+          },
+          "startSec": {
+            "minimum": 0,
+            "type": "number"
+          }
+        },
+        "required": [
+          "startSec",
+          "endSec"
+        ],
+        "type": "object"
+      }
+    },
+    "required": [
+      "type",
+      "mediaId"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Snapshot word-timed captions from the SAVED edits on one explicit enabled video or audio track. The host reads each source media transcript, projects words through clip trim, excluded ranges and placement, then replaces the caption segments. This is route-materialized to setCaptions; call it AFTER persisting clip edits and call it again when those edits change. The existing caption style and depth are preserved. Missing transcripts, unsupported clips, inconsistent clip durations, and overlapping audible clips fail loud. Playback rate scales source word times and playable duration on both audio and video tracks.",
+    "properties": {
+      "trackId": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "type": {
+        "const": "captions.fromComposition",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "trackId"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Set the output format — `aspectRatio` (16:9|9:16|1:1|4:5) plus optional `fps` and `resolution`. Merges: an omitted field keeps the current value.",
+    "properties": {
+      "format": {
+        "additionalProperties": {},
+        "properties": {
+          "aspectRatio": {
+            "enum": [
+              "16:9",
+              "9:16",
+              "1:1",
+              "4:5"
+            ],
+            "type": "string"
+          },
+          "fps": {
+            "anyOf": [
+              {
+                "const": 24,
+                "type": "number"
+              },
+              {
+                "const": 25,
+                "type": "number"
+              },
+              {
+                "const": 30,
+                "type": "number"
+              },
+              {
+                "const": 60,
+                "type": "number"
+              }
+            ]
+          },
+          "resolution": {
+            "enum": [
+              "hd",
+              "fhd",
+              "4k"
+            ],
+            "type": "string"
+          }
+        },
+        "required": [
+          "aspectRatio"
+        ],
+        "type": "object"
+      },
+      "type": {
+        "const": "setFormat",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "format"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Add an EMPTY track of a given family (video|audio|image|overlay|effect). Optional pinned `id`. The new track is appended, so it starts at the BACK: index 0 is the top layer and higher indices are further back (see `reorderTracks`). Track order only ranks clips on the same plane — every overlay draws above the video lane unless its `zPlane` is `behind-subject`, whatever its track index.",
+    "properties": {
+      "id": {
+        "type": "string"
+      },
+      "kind": {
+        "enum": [
+          "video",
+          "audio",
+          "image",
+          "overlay",
+          "effect"
+        ],
+        "type": "string"
+      },
+      "name": {
+        "type": "string"
+      },
+      "type": {
+        "const": "addTrack",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "kind"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Remove a track AND all its clips by id.",
+    "properties": {
+      "trackId": {
+        "type": "string"
+      },
+      "type": {
+        "const": "removeTrack",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "trackId"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Patch a track's `name` / `enabled` by id. Track volume is retired: set each clip's own volume.",
+    "properties": {
+      "trackId": {
+        "type": "string"
+      },
+      "type": {
+        "const": "updateTrack",
+        "type": "string"
+      },
+      "updates": {
+        "additionalProperties": false,
+        "properties": {
+          "enabled": {
+            "type": "boolean"
+          },
+          "name": {
+            "type": "string"
+          },
+          "volume": {
+            "maximum": 4,
+            "minimum": 0,
+            "type": "number"
+          }
+        },
+        "type": "object"
+      }
+    },
+    "required": [
+      "type",
+      "trackId",
+      "updates"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Move a track from one index to another. ORDER: index 0 is the TOP layer, not the bottom — moving a backdrop to index 0 puts it in FRONT of everything and hides the composition. Higher index = further back. PRECEDENCE: track order decides compositing only among clips on the same plane. Overlays are composited in a lane ABOVE the video lane whatever their track index; the one exception is `zPlane:\"behind-subject\"`, which moves the overlay inside its host clip, behind the segmented foreground. So if reordering tracks does not change what you see, the plane split already decided it.",
+    "properties": {
+      "fromIndex": {
+        "type": "number"
+      },
+      "toIndex": {
+        "type": "number"
+      },
+      "type": {
+        "const": "reorderTracks",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "fromIndex",
+      "toIndex"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Move a clip to another SAME-family track, optionally at a new `newStartTime`.",
+    "properties": {
+      "clipId": {
+        "type": "string"
+      },
+      "newStartTime": {
+        "type": "number"
+      },
+      "targetTrackId": {
+        "type": "string"
+      },
+      "type": {
+        "const": "moveClipToTrack",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId",
+      "targetTrackId"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Duplicate a clip by id. Pin `newClipId` to make the copy's id deterministic (required for a clean undo/inverse).",
+    "properties": {
+      "clipId": {
+        "type": "string"
+      },
+      "newClipId": {
+        "type": "string"
+      },
+      "type": {
+        "const": "duplicateClip",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Server-authoritative: delete the [start,end] time window (seconds) and ripple every downstream clip/marker/caption earlier to close the gap.",
+    "properties": {
+      "end": {
+        "type": "number"
+      },
+      "start": {
+        "type": "number"
+      },
+      "type": {
+        "const": "cutAndRipple",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "start",
+      "end"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Server-authoritative: shift everything at/after `time` (seconds) by `amount` seconds (+ opens a gap, − closes one).",
+    "properties": {
+      "amount": {
+        "type": "number"
+      },
+      "time": {
+        "type": "number"
+      },
+      "type": {
+        "const": "ripple",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "time",
+      "amount"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Server-authoritative: exclude a [sourceStart,sourceEnd] span (seconds) of a clip's SOURCE (an internal trim) and ripple downstream — the preferred way to drop a sub-range vs a source patch.",
+    "properties": {
+      "clipId": {
+        "type": "string"
+      },
+      "reason": {
+        "type": "string"
+      },
+      "sourceEnd": {
+        "type": "number"
+      },
+      "sourceStart": {
+        "type": "number"
+      },
+      "type": {
+        "const": "addExcludedRange",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId",
+      "sourceStart",
+      "sourceEnd"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Server-authoritative: remove a clip's previously-added excluded range by index (re-includes that span, ripples downstream).",
+    "properties": {
+      "clipId": {
+        "type": "string"
+      },
+      "rangeIdx": {
+        "type": "number"
+      },
+      "type": {
+        "const": "removeExcludedRange",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "clipId",
+      "rangeIdx"
+    ],
+    "type": "object"
+  },
+  {
+    "additionalProperties": false,
+    "description": "Atomically repin explicit version3 invocations using complete before/after execution references and an exact composition etag. Persistence must canonically admit scoped source hashes, destination input schemas and every resulting target context before applying, including replay/undo. Never infer a latest head, downgrade versions or accept an admitted flag.",
+    "properties": {
+      "changes": {
+        "items": {
+          "additionalProperties": false,
+          "properties": {
+            "after": {
+              "oneOf": [
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "assets": {
+                      "additionalProperties": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 256,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "componentId": {
+                      "maxLength": 256,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "mediaBindings": {
+                      "additionalProperties": {
+                        "items": {
+                          "maxLength": 128,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "array"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 128,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "params": {
+                      "additionalProperties": {
+                        "$ref": "#/$defs/__schema0"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "seed": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "sourceVersionId": {
+                      "pattern": "^[a-f0-9]{64}$",
+                      "type": "string"
+                    },
+                    "version": {
+                      "const": 3,
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "version",
+                    "componentId",
+                    "sourceVersionId",
+                    "params",
+                    "seed"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "assets": {
+                      "additionalProperties": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 256,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "componentId": {
+                      "maxLength": 256,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "mediaBindings": {
+                      "additionalProperties": {
+                        "items": {
+                          "maxLength": 128,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "array"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 128,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "params": {
+                      "additionalProperties": {
+                        "$ref": "#/$defs/__schema0"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "seed": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "sourceVersionId": {
+                      "pattern": "^[a-f0-9]{64}$",
+                      "type": "string"
+                    },
+                    "version": {
+                      "const": 4,
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "version",
+                    "componentId",
+                    "sourceVersionId",
+                    "params",
+                    "seed"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "before": {
+              "oneOf": [
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "assets": {
+                      "additionalProperties": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 256,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "componentId": {
+                      "maxLength": 256,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "mediaBindings": {
+                      "additionalProperties": {
+                        "items": {
+                          "maxLength": 128,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "array"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 128,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "params": {
+                      "additionalProperties": {
+                        "$ref": "#/$defs/__schema0"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "seed": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "sourceVersionId": {
+                      "pattern": "^[a-f0-9]{64}$",
+                      "type": "string"
+                    },
+                    "version": {
+                      "const": 3,
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "version",
+                    "componentId",
+                    "sourceVersionId",
+                    "params",
+                    "seed"
+                  ],
+                  "type": "object"
+                },
+                {
+                  "additionalProperties": false,
+                  "properties": {
+                    "assets": {
+                      "additionalProperties": {
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 256,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "componentId": {
+                      "maxLength": 256,
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "mediaBindings": {
+                      "additionalProperties": {
+                        "items": {
+                          "maxLength": 128,
+                          "minLength": 1,
+                          "type": "string"
+                        },
+                        "type": "array"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "maxLength": 128,
+                        "minLength": 1,
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "params": {
+                      "additionalProperties": {
+                        "$ref": "#/$defs/__schema0"
+                      },
+                      "properties": {},
+                      "propertyNames": {
+                        "type": "string"
+                      },
+                      "type": "object"
+                    },
+                    "seed": {
+                      "minLength": 1,
+                      "type": "string"
+                    },
+                    "sourceVersionId": {
+                      "pattern": "^[a-f0-9]{64}$",
+                      "type": "string"
+                    },
+                    "version": {
+                      "const": 4,
+                      "type": "number"
+                    }
+                  },
+                  "required": [
+                    "version",
+                    "componentId",
+                    "sourceVersionId",
+                    "params",
+                    "seed"
+                  ],
+                  "type": "object"
+                }
+              ]
+            },
+            "placementId": {
+              "minLength": 1,
+              "type": "string"
+            }
+          },
+          "required": [
+            "placementId",
+            "before",
+            "after"
+          ],
+          "type": "object"
+        },
+        "maxItems": 512,
+        "minItems": 1,
+        "type": "array"
+      },
+      "componentId": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "expectedCompositionEtag": {
+        "minLength": 1,
+        "type": "string"
+      },
+      "from": {
+        "pattern": "^[a-f0-9]{64}$",
+        "type": "string"
+      },
+      "to": {
+        "pattern": "^[a-f0-9]{64}$",
+        "type": "string"
+      },
+      "type": {
+        "const": "component.repin-v3",
+        "type": "string"
+      }
+    },
+    "required": [
+      "type",
+      "componentId",
+      "from",
+      "to",
+      "expectedCompositionEtag",
+      "changes"
+    ],
+    "type": "object"
+  }
+]

First observedOct 10, 2026

TDQS

A4.5/5.0

Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With annotations declaring only the safety profile, the description carries the rest: transactionality, dry_run validation, if_match/409 stale_etag semantics, unsupported_concurrency refusal, brand-change refusal, caption regeneration requirements after timeline edits, and the warnings[] return signal. This is far richer behavioral context than the annotations provide. (Minor tension: the ops include clip.remove/removeTrack deletions while destructiveHint is false, but the edits are described as undoable, so this is not a hard contradiction.)

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness2/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The core purpose is front-loaded, but the body is an unstructured wall that sprawls through captions, cards and scene shots in a single block. Substantial portions (SCENE SHOTS schema, CARDS var() mechanics, caption op variants) restate what the nested op and scene schemas already document in full, so many sentences do not earn their place at the tool-description level.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

There is no output schema, and the description partially compensates by disclosing return signals (warnings[], dry_run returns {valid, errors}) and the failure modes (stale_etag, unsupported_concurrency, brand refusal, caption errors). It does not describe the success response shape or the resulting etag, which a mutation of this complexity would ideally include.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the baseline is 3, but the description adds operational meaning: composition_id vs session_id mutual exclusivity and the A/B authoring workflow, if_match's OCC role, dry_run's behavior, and the concurrency envelope's endpoint requirement. These semantics go beyond field definitions, though many are also restated in the schema descriptions.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The opening states a specific verb and resource ('Atomically apply an array of CompositionOps to a project composition') plus the transactional contract ('All ops succeed or none do'). It distinguishes itself from siblings by pointing at describe_composition_ops for the op list and get_composition for reading, so an agent can place it without opening any schema.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It gives explicit when-to-use guidance ('seed a composition' vs 'make targeted edits'), names the alternative sources (describe_composition_ops, get_composition), and states prerequisites and contingencies (componentExecutionVersions negotiation, brand refusal, guarded concurrency requiring an enforcing endpoint). Exclusions and alternatives are covered in detail.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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