Complete JS rewrite for IRC-style lobby flow:
- Auto-connect signal channel on app launch (no connect button)
- Lobby shows online users with identicon, name, voice status
- "Join Voice" FAB toggles room voice on/off
- Tap user → context menu → Direct Call
- Incoming call banner slides up from bottom
- Back button returns from call to lobby
- Settings panel preserved with all debug toggles
~500 lines (down from 1786) — focused on the lobby experience.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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