The owner reports its position every ten seconds, and the server
publishes a snapshot to every device on anything that touches the
session. The owner was writing those snapshots back into its own store,
so each one dragged playback back to its last report. Reloading another
tab did it too, since registering a device publishes a snapshot: the
phone jumped back to whatever position was on record, which right after
a track change is zero, and the song started over.
A device that already owns the session now ignores incoming snapshots
and stays the authority on its own position. Snapshots still apply when
ownership moves to or away from this device, which is what that branch
was written for. Moving audio between devices also flushes the real
position first, rather than handing over a ten-second-old one.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
kami
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