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>

neode-ui/mock-backend.js

@@ -1065,11 +1065,12 @@ app.post('/aiui/api/claude/*', (req, res) => {
   })
 
   proxyReq.on('error', (err) => {
-    console.error('[Claude Proxy] Error:', err.message)
+    const msg = err.message || err.code || JSON.stringify(err) || 'Unknown proxy error'
+    console.error('[Claude Proxy] Error:', msg)
     if (!res.headersSent) {
       res.status(502).json({
         type: 'error',
-        error: { type: 'proxy_error', message: err.message }
+        error: { type: 'proxy_error', message: msg }
       })
     }
   })
@@ -1080,11 +1081,24 @@ app.post('/aiui/api/claude/*', (req, res) => {
 
 // Web search stub (no search engine configured in demo)
 app.get('/api/web-search', (req, res) => {
-  res.json({ results: [], error: 'Web search not available in demo mode' })
+  res.json({ results: [] })
 })
 
-// AIUI API catch-all for unimplemented endpoints (return JSON instead of HTML)
+// TMDB API stub (no TMDB key in demo)
+app.get('/api/tmdb/*', (req, res) => {
+  res.json({ results: [] })
+})
+
+// Catch-all for unimplemented API endpoints (return JSON, not HTML)
+app.all('/api/*', (req, res) => {
+  res.status(404).json({ error: 'Not available in demo mode' })
+})
 app.all('/aiui/api/*', (req, res) => {
+  res.status(404).json({ error: 'Not available in demo mode' })
+})
+
+// General /api/ catch-all
+app.all('/api/*', (req, res) => {
   res.status(404).json({ error: 'Not found' })
 })