- Fix param sliders: Viewer now fits camera once per design (fitKey), not on
every param change — size changes are visible again. Better slider ranges.
- Progress UX: full-stage overlay with spinning cube + pipeline stepper,
animated thinking dots in chat, send-button spinner, staged status.
- B (vision verify): capture canvas → /api/verify (Claude vision) → auto-refine
one pass on mismatch. Fail-open so a flaky judge never blocks.
- C (persistence): D1 designs table + anonymous cookie identity, save/load/list,
designs drawer, autosave, shareable ids. no-store on all /api responses.
- D (STEP scaffold): /api/step + build123d prompt + service client (step.ts),
Download STEP button. Needs STEP_SERVICE_URL to go live.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Chat → Claude writes a JSCAD script → sandboxed Web Worker executes it →
live three.js preview + STL export. Parametric // @param comments become
live sliders. Server-side repair loop fixes geometry errors before the user
sees them.
- src/worker: Hono API, Claude orchestration (prompt-cached system prompt),
/api/generate + /api/repair
- src/client: React + react-three-fiber viewport, JSCAD engine Web Worker
- Radical-branded (red #FF2D55 on #0B0B09, Syne + IBM Plex Mono)
Engine validated end-to-end: mug model → 3256-triangle valid binary STL.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
