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]/(utils)/harness-overview-cache.ts

@@ -0,0 +1,50 @@
+import { AppData } from "@/src/data/app-data";
+import type { HarnessOverview } from "@/src/types";
+
+/**
+ * Bumped when `HarnessOverview` changes shape, so an older cache is
+ * fetched again instead of read.
+ */
+const CacheVersion = 1;
+
+type Key = {
+    bot_id: number;
+    workspace_id?: number | null;
+};
+
+export type CachedHarnessOverview = {
+    v: number;
+    /**
+     * Unix ms it was fetched.
+     */
+    at: number;
+    harnesses: HarnessOverview[];
+};
+
+function cacheKey({ bot_id, workspace_id }: Key) {
+    return `${AppData.HarnessOverviewStorageKey}:${bot_id}:${workspace_id || 0}`;
+}
+
+/**
+ * The models modal's data last fetched for this conversation, from
+ * `localStorage`; null when there is none or it can't be read.
+ */
+export function readHarnessOverviewCache(key: Key): CachedHarnessOverview | null {
+    try {
+        const cached = JSON.parse(localStorage.getItem(cacheKey(key)) || "null");
+
+        return cached?.v == CacheVersion &&
+            Array.isArray(cached.harnesses) &&
+            typeof cached.at == "number"
+            ? cached
+            : null;
+    } catch {
+        return null;
+    }
+}
+
+export function writeHarnessOverviewCache({ harnesses, ...key }: Key & { harnesses: HarnessOverview[] }) {
+    try {
+        localStorage.setItem(cacheKey(key), JSON.stringify({ v: CacheVersion, at: Date.now(), harnesses }));
+    } catch {}
+}