feat(frontend): rebuild as Ambient/WebGL console with all pages + command palette

Ground-up rombak UI: hapus semua component/page lama, bangun ulang dengan
desain sistem Ambient (WebGL haze + drifting motes, signal-driven color)
di atas kontrak API/WS/type yang sudah ada.

- Design system: globals.css tokens + primitives (glass, button, badge,
  select, avatar, toast, chart SVG murni).
- Shell: nav rail, topbar (status WS + pill signal + theme), AppFrame.
- 8 halaman: dashboard, voice (orbital stage), media, messages (live feed +
  detail AI), moderation, analysis (search), recordings, + chatbot floating.
- Command palette (Cmd/Ctrl+K) untuk navigasi cepat.
- Server fetch di-page di-try/catch agar render graceful saat backend mati.

Verified: tsc clean, next build 8/8 halaman, semua route 200.

services/frontend/src/components/shared/index.ts

@@ -1,4 +1,3 @@
-export { EmptyState } from "./empty-state";
-export { ErrorBoundary } from "./error-boundary";
-export { ErrorState } from "./error-state";
-export { LoadingSkeleton } from "./loading-skeleton";
+export { SectionHeader, MetricTile } from "./section";
+export { EmptyState, ErrorState, LoadingState } from "./states";
+export { GuildChannelPicker } from "./guild-picker";