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/bots/[bot_id]/(partials)/message-thread.tsx

@@ -1,4 +1,4 @@
-import { useRef, type RefObject } from "react";
+import { useMemo, useRef, type RefObject } from "react";
 import Stack from "@moduletrace/twui/layout/Stack";
 import type {
     BotMessageWithAttachments,
@@ -38,7 +38,7 @@ type Props = {
  * last one. Text selected in a message can be quoted in the composer.
  */
 export default function MessageThread({ bot, messages, progress, reply_progress, has_task, onQuote }: Props) {
-    const groups = groupMessages({ messages });
+    const groups = useMemo(() => groupMessages({ messages }), [messages]);
     const ref = useRef<HTMLDivElement>(null);
     const { selection, clear } = useMessageSelection({ ref });