Make pages load fast on mobile

- Compress responses: page scripts and styles once (brotli or gzip, in
  memory) and cached immutable; pages and API JSON gzipped as they stream
- Service worker serves content-named assets cache-first
- Load the models modal's data when it opens (cached in localStorage)
  instead of shipping the model catalog in every conversation page
- Lazy-load the Tiptap composer and memoize thread messages
- Import lucide icons directly; twui 0.1.4 drops by-name icons from Button
- bun run start builds the pages minified before serving

Co-Authored-By: Claude Opus 5.5 <[email protected]>

package.json

@@ -14,7 +14,7 @@
         "db:backup": "bunx bun-sqlite backup",
         "seed": "bun src/scripts/seed-super-admin.tsx",
         "seed:bots": "bun src/scripts/seed-bots.ts",
-        "start": "MAIN_SERVER=1 NODE_ENV=production bun src/server.ts",
+        "start": "NODE_ENV=production bunx bunext build && MAIN_SERVER=1 NODE_ENV=production bun src/server.ts",
         "typecheck": "tsc --noEmit",
         "test": "bun test"
     },
@@ -41,7 +41,7 @@
         "@modelcontextprotocol/sdk": "^1.32.1",
         "@moduletrace/bun-sqlite": "^1.3.0",
         "@moduletrace/bunext": "^1.3.3",
-        "@moduletrace/twui": "^0.1.2",
+        "@moduletrace/twui": "^0.1.4",
         "@tiptap/extension-bubble-menu": "3.32.0",
         "@tiptap/extension-mention": "3.32.0",
         "@tiptap/extension-placeholder": "3.32.0",