feat(server,web): first real-time cycle — room create/join + lobby
Server (@nerdware/server):
- RoomManager: in-memory rooms (Map), code generation, create/join,
disconnect handling, public snapshot projection (no secrets)
- Socket.IO handlers: room:create / room:join with typed acks,
room:state broadcast on every change, lobby:updateSettings (host-only),
player:left on disconnect
Web (web):
- typed Socket.IO client + Zustand store mirroring room:state
- wouter routing: home (create/join) + minimal lobby (live player list)
- @nerdware/shared wired into the client
Roadmap V1 step 2. Verified end-to-end (create/join/broadcast/disconnect).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>