Web FreeCAD BitBybit

FreeCAD-aligned web CAD frontend baseline for the BitBybit runtime boundary.

Current scope

• React + Vite frontend shell
• Three.js 0.185.1 is pinned for the internal Viewport Adapter; React does not import Three.js directly.
• FreeCAD-style application menus, workbench navigation, Combo View, Task Dock, viewport and Report view
• Machine-readable workbench and command manifest in src/freecadManifest.ts
• Chinese implementation plan in docs/web-cad-implementation-plan.zh-CN.md

The current milestone is a facade-first integration slice. Part Design document transactions and history are executable in the mock domain adapter; the internal SQLite WASM + OPFS Persistence Worker, schema and in-memory fallback are bundled behind facade.project. FreeCAD/OCCT geometry, solver behavior, FCStd interoperability and full workbench semantics remain staged behind the documented P3-P7 gates.

Development

npm install
npm run dev

Node.js 22 or newer is the supported development baseline, matching the SQLite WASM package engine requirement.

Build verification:

npm run build

The SQLite OPFS worker requires cross-origin isolation headers. Vite dev and preview apply Cross-Origin-Opener-Policy: same-origin and Cross-Origin-Embedder-Policy: require-corp; deployments must preserve them.