refactor: remove voice/recording/media features from frontend + prune lockfiles
- Delete pages: (dashboard)/{recordings,voice,media}/ incl. view.tsx
- Delete components/{voice,media}, hooks/{use-voice,use-recordings,use-media},
lib/audio/ (mic-transmit, pcm-player, wav), api/{voice,recordings,media},
types/{voice,recording,media}, lib/hash.ts
- Cut nav tiles (Active Voice Stages, Voice Recording Archive) from dashboard,
MiniPlayer from ambient-app, hooks/types barrel exports, WS voice/media events
- Re-home guilds + textChannels to messages oRPC router (DB-derived) so the
messages page picker keeps working; guild-picker simplified to text-only
- Clean Channel/AppConfig types of voice remnants
- Delete infra/docker/recordings/ + 11 voice/recording/video spec docs
- pnpm install: prune direct voice deps from gateway + backend lockfiles
(prism-media/opusscript remain only as transitive discord.js deps)