Screen sharing swaps the outgoing video track on every peer's sender with
replaceTrack (same m-line, no renegotiation); the camera returns when the
share stops, including via the browser's own "Stop sharing" bar. Mic and
camera toggles flip track.enabled. A new Status signal kind broadcasts
mic/cam/screen state so tiles can show badges; newcomers get it directed
when their Join arrives.
Tiles carry a name label, click to pin as a stage (a peer's screen share
pins itself), double-click for fullscreen. The call bar has an elapsed
timer and a participant count. Controls are icon-only inline SVGs on
currentColor: plain with a strike when off, a soft glow and ticking LED
when live. Red is reserved for leave.
Also fixed along the way: the peer map was a non-reactive StoredValue, so
the tile list never re-rendered when someone joined; ICE candidates that
arrive before the remote description are now buffered instead of
rejected; a peer whose connection fails or closes is dropped.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01L3sD29ozDvqA7jozeZXZoB
