Added value: +"Exact target length in seconds (e.g. 210 for «3:30»). It governs the duration profile: if it falls outside the profile's range, the profile whose range contains it governs and the response says so (`durationProfileSource: target_duration_sec`, `durationProfileDisplaced` names the profile it replaced). Without a profile it picks the one that contains it. Without it the profile's own target governs."

Added value: +{
+  "description": "The creator's own uploaded files that belong to this piece (footage, photos, a recorded voice). Each item names one file of the personal library by its `assetId`: the id alone, or an object with `asset_id` and a `purpose` (what the file is for in the piece). The files are stored with the piece; the answer says what the piece does with them (`direction`), and they are not part of the price. While a file is still being verified, the `handle` of its upload is accepted in place of the id, and the request is answered as not ready; a file that is not in the caller's library is answered as not usable.",
+  "items": {
+    "anyOf": [
+      {
+        "description": "The `assetId` of a file of the personal library.",
+        "type": "string"
+      },
+      {
+        "properties": {
+          "asset_id": {
+            "description": "The `assetId` of a file of the personal library.",
+            "type": "string"
+          },
+          "purpose": {
+            "description": "What the file is for in the piece, e.g. 'the interview that closes the piece'.",
+            "type": "string"
+          }
+        },
+        "required": [
+          "asset_id"
+        ],
+        "type": "object"
+      }
+    ]
+  },
+  "type": "array"
+}

Previous value: -"As in generate_script. A presenter on screen (`face`, `on_camera` or `describe_face`) moves the price."New value: +"The cast, as at creation. A presenter on screen (`face`, `on_camera` or `describe_face`) moves the price."

Previous value: -"The presenter you want, in words, when no catalogue handle fits. Casting resolves it against the catalogue and may generate."New value: +"The wanted presenter, in words, for when no catalogue handle fits. Casting resolves it against the catalogue and may generate one."

Previous value: -"Presenter `id` or `@handle` from `list_cast`."New value: +"A presenter `id` or `@handle` from the catalogue of nameable presenters."

Previous value: -"Voice `id` or `@handle` from `list_cast`."New value: +"A voice `id` or `@handle` from the catalogue of nameable voices."

Previous value: -"Referent id from `list_referents`."New value: +"A referent id from Vixdeo's catalogue of formats."

Previous value: -"Omit to price the platform default (`list_referents.platformDefaults.durationProfile`)."New value: +"Without it, the platform default is priced (`platformDefaults.durationProfile` in the catalogue of formats)."

Previous value: -"What to do when the era check finds an anachronism in a GENERATED shot (a modern helmet in 1906): `note` records it and mounts the shot; `rebuy` buys the shot again ONCE, telling the generator what to avoid, within the piece's recomposition cap. Omit it and the budget tier decides (premium rebuys; standard and economy note)."New value: +"What happens when the era check finds an anachronism in a GENERATED shot (a modern helmet in 1906): `note` records it and mounts the shot; `rebuy` buys the shot again ONCE, telling the generator what to leave out, within the piece's recomposition cap. Without it the budget tier decides (premium rebuys; standard and economy note)."

Previous value: -"Language of the SUBTITLES (BCP-47: `es`, `pt-BR`…). Its OWN axis, independent of `target_language`: omit it and the subtitles follow the piece; declare it and the piece is narrated in one language and read in another (measured: 21 live projects declare the two on purpose)."New value: +"Language of the SUBTITLES (BCP-47: `es`, `pt-BR`…), its OWN axis, independent of `target_language`: without it the subtitles follow the piece; with it the piece is narrated in one language and read in another (measured: 21 live projects declare the two on purpose)."

Previous value: -"The idea (same as generate_script). Optional here: without an idea or a `source` the verdict says `no_idea` and there is no price yet."New value: +"The idea (the same field as at creation). Optional here: without an idea or a `source` the verdict says `no_idea` and there is no price yet."

Previous value: -"Your OWN material. `kind=script` + `respect=strict`: the piece narrates your text verbatim (you keep word-level control from the start); `kind=content`: an article/notes the Director adapts (`respect` guided|adaptive). Omit to let the Director write from `prompt_seed`."New value: +"The creator's OWN material. `kind=script` + `respect=strict`: the piece narrates the text verbatim (word-level control from the start); `kind=content`: an article or notes the Director adapts (`respect` guided|adaptive). Without it the Director writes from `prompt_seed`."