chore: rebuild AIUI dist + add TMDB/API catch-all stubs for demo

- Rebuild AIUI with latest changes (haiku model fix, recipe panel, image fallbacks)
- Add /api/tmdb/* stub returning empty results
- Add /api/* catch-all returning JSON 404 (prevents HTML fallback errors)
- Improve Claude proxy error messages (include err.code fallback)
- Strip film images from dist to keep under 5MB

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

demo/aiui/assets/chunk-QZHKN3VN-Bgqnzg5H.js

@@ -0,0 +1 @@
+import{_ as s}from"./mermaid.core-_VcdMFBU.js";var t,e=(t=class{constructor(i){this.init=i,this.records=this.init()}reset(){this.records=this.init()}},s(t,"ImperativeState"),t);export{e as I};