Digitalisierungsplanung

Zustand is a standalone visual FSM builder for understanding, modeling, testing, and exporting digital business processes.

The repository is intentionally narrow. It contains the app, its generated preview runtime, the MCP/API control layer, and the tests that protect the state-machine contract.

Screenshots

These screenshots are generated from the real state.html app in CI after successful pushes, so the README stays aligned with the current UI.

The editor keeps the process, the generated app, and the global-state contract visible in one place.

The preview is the same FSM running as an app. Buttons and widgets fire real transitions and write through the global JSON bus.

The state inspector edits the selected state's trigger, widgets, screen fields, and scoped bus data without creating hidden local state.

Related MCP server: GASSAPI MCP Server

Contract

There is one source of truth:

global JSON state/event bus

Everything that affects flow or data must be represented in the model and must read from or write to that bus through the official runtime path.

Allowed local state:

• Drag, hover, focus, and selection affordances.

• Viewport pan/zoom.

• Animation frame and timer handles.

• Temporary editor UI state.

Not allowed:

• Hidden component stores.

• DOM-only flow decisions.

• Stored HTML as component truth.

• Preset caches that act like runtime data.

• Shadow copies of state.current, transition results, widget values, or flow state.

• Legacy migrations or demo-specific behavior paths in the core model.

Repository

.
|-- index.html
|-- state.html
|-- package.json
|-- playwright.config.js
|-- tests/
|-- mcp/
|-- docs/
|   `-- state-blueprint-mcp.md
|-- statereadme.md
|-- CNAME
|-- .github/workflows/deploy.yml
`-- .gitea/workflows/test.yml

App

state.html contains the visual editor host and the generated preview runtime.

Main responsibilities:

• Model normalization and validation.

• Canvas rendering, SVG ports, boundary proxies, routing, drag/drop, pan, and zoom.

• State inspector and render editor.

• Global state/data tree UI.

• Data defaults, data types, data wires, repeat mappings, and fetch-on-enter configuration.

• DaisyUI preset catalog and preset instantiation.

• Generated app preview runtime.

• Save/load/export/import helpers.

The file stays self-contained so it can be served as a single static app.

Runtime

The generated preview runtime is bus-driven:

• Host sends STATE_BLUEPRINT_MODEL.

• Runtime sends STATE_BLUEPRINT_RUNTIME_STATE.

• Runtime asks the host to open external links with STATE_BLUEPRINT_OPEN_URL.

Runtime rules:

• defaultContext(model) creates bus defaults such as state.current, state.previous, state.lastTransition, and runtime.paused.

• runtimeSet(...) and writeRuntimeState(...) are the write path into the bus.

• Entry effects, such as fetch, run on state entry, not during render.

• Render reads the model plus the bus. It does not invent model state.

MCP/API

The MCP layer is the structured API surface for automation and external tools. It edits the same canonical JSON model as the app.

Main tools:

• state_blueprint_get_model

• state_blueprint_replace_model

• state_blueprint_apply_actions

• state_blueprint_plan_prompt

• state_blueprint_apply_prompt

• state_blueprint_validate

• state_blueprint_export_definition

• state_blueprint_export_html

• state_blueprint_import_definition

• state_blueprint_action_catalog

Run the MCP server:

STATE_BLUEPRINT_MODEL_PATH=./state-blueprint.workspace.json npm run mcp:state

The API applies ordered model actions, normalizes the result, validates the contract, and persists only the canonical JSON model. It does not click the UI and does not keep a parallel runtime store.

Full API documentation: docs/state-blueprint-api.md

Tests

The tests are part of the architecture.

• core-contracts.spec.js protects source-level and browser-level contracts.

• state-tool.spec.js is the broad app smoke suite for canvas, proxies, nested states, routing, presets, Daisy behavior, touch gestures, undo/redo, render ordering, save/load, and preview behavior.

• nested-runtime-regressions.spec.js protects generated app flow through composite states.

• state-blueprint-mcp.spec.js protects the MCP/API contract.

Run:

npm test
npm run test:contracts
npm run test:full

Deploy

The GitHub Pages workflow runs the smoke suite before publishing the static app.