feat(ui): canvas-first redesign with a self-hosted draw.io

The canvas now fills the window and the chat floats on its right. draw.io is
served from our own origin (public/drawio, downloaded at build time and
checked against the release's SHA-256), so the app can drive the editor
directly:

- every AI change becomes a version card with a thumbnail; compare, restore
  or undo it, and Ctrl+Z on the canvas takes an AI change back in one step
- shapes the AI just changed are highlighted on the canvas
- selected shapes appear as a chip and are sent to the model
- the app's own canvas toolbar, shape library and page tabs replace
  draw.io's chrome
- new start screen, session rename and switcher, open .drawio files
- settings split into Models & keys, Appearance, Advanced and About
- phones switch between canvas and chat
- dark mode keeps the diagram on a white sheet and no longer flashes

With an external draw.io (NEXT_PUBLIC_DRAWIO_BASE_URL) the app falls back to
draw.io's own toolbar and the features above that need same origin are off.

The chat logic moved from the 1500-line chat panel into a chat engine plus
small UI components; zustand holds canvas, versions, settings and UI state.
This commit is contained in:
dayuan.jiang
2026-10-06 22:01:09 +09:00
parent 18a20aa1ca
commit 366d9ee4ff
106 changed files with 12453 additions and 6879 deletions
+4 -2
View File
@@ -18,9 +18,11 @@
**Problem**: Intranet environment shows "Cannot find server IP address for embed.diagrams.net"
**Key Point**: `NEXT_PUBLIC_*` environment variables are **build-time** variables, they get bundled into JS code. **Runtime settings don't work!**
**Key Point**: The app now ships with its own copy of draw.io, served from `/drawio`, so the browser no longer needs `embed.diagrams.net`. If you still see this error, the image was built with `NEXT_PUBLIC_DRAWIO_BASE_URL=https://embed.diagrams.net` (the old Dockerfile default). Rebuild without that build argument. See [Offline Deployment](./offline-deployment.md).
**Solution**: Must pass via `args` at build time:
`NEXT_PUBLIC_*` environment variables are **build-time** variables, they get bundled into JS code. **Runtime settings don't work!**
**To keep a separate draw.io server instead**, pass it via `args` at build time:
```yaml
# docker-compose.yml