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]>

src/pages/admin/settings/backups/(partials)/create-backup-button.tsx

@@ -1,3 +1,4 @@
+import { DatabaseBackup } from "lucide-react";
 import Button from "@moduletrace/twui/layout/Button";
 import Tag from "@moduletrace/twui/elements/Tag";
 import Row from "@moduletrace/twui/layout/Row";
@@ -30,7 +31,7 @@ export default function CreateBackupButton() {
             {status?.error && <Tag color="error">{status.msg}</Tag>}
             <Button
                 title="Create Backup"
-                beforeIcon="DatabaseBackup"
+                beforeIcon={<DatabaseBackup />}
                 loading={loading}
                 onClick={() => {
                     create_backup();