- Add jam-server/: a Cloudflare Worker with one Durable Object per room code.
It tracks membership, host handoff and kicks/bans, keeps the queue for late
joiners, routes guest commands to the host and serves the room clock.
- Sync playback: devices estimate the server clock, the host sends position
anchors in server time, guests follow by nudging playback rate (seeking only
when far off) and stream the host's audio source when they share a plugin.
- Seek, play/pause, skip and jump apply to the whole room.
- Recover from network loss instead of crashing: socket failures reconnect
with backoff, silent sockets are detected, and an expired room is recreated
by its host.
- Keep cost and battery low: anchors only on change (plus host drift and a
60 s heartbeat), kept in memory rather than storage, free runtime keep-alives
once a minute, rare clock re-syncs, and no polling while paused or buffering.
- Remove the MQTT broker settings and libraries.
- Add sync unit tests, client/session integration tests (JAM_TEST_URL) and a
network-loss test, plus a deploy workflow for the server.
