feat(frontend): Ambient/WebGL console revamp + lint/type cleanup

Ground-up rebuild of the GMW frontend as an Ambient Field console:
- WebGL ambient background (Three.js shader, drifting motes, reduced-motion aware)
- Glassmorphism dark cyber theme across all 8 routes
- SSR page + client view split with SWR fallback; realtime via WebSocket
- Command palette (Cmd+K), chatbot FAB, guild/channel pickers
- Chart primitives: donut, radial-gauge, area-activity, sparkline, equalizer

Cleanup (review pass):
- Remove stray Puppeteer nav-test/nav-debug scripts
- Replace non-null assertions with guards (dashboard/moderation)
- Drop unused useGuilds fetches in messages/voice views
- Type implicit-any `let` declarations across pages
- Add a11y roles/labels to SVG charts and audio, tidy imports

services/frontend/src/app/(dashboard)/dashboard/page.tsx

@@ -4,10 +4,13 @@ import { DashboardView } from "./view";
 export const dynamic = "force-dynamic";
 
 export default async function DashboardPage() {
-  let stats = undefined;
-  let activity = undefined;
+  let stats: Awaited<ReturnType<typeof getDashboardStats>> | undefined;
+  let activity: Awaited<ReturnType<typeof getActivity>> | undefined;
   try {
-    [stats, activity] = await Promise.all([getDashboardStats(), getActivity(14)]);
+    [stats, activity] = await Promise.all([
+      getDashboardStats(),
+      getActivity(14),
+    ]);
   } catch {
     // Backend unavailable — client hooks will surface the error state.
   }