Two-phone Amethyst sessions stream Opus frames just fine on the wire,
but the kixelated/moq browser watcher (the canonical web reference) sees
nothing — because we never published a catalog.json track. moq-lite
watchers discover a broadcast's tracks by subscribing to the
`catalog.json` track on the broadcast suffix and parsing the JSON
manifest. Without it the watcher has nothing to subscribe to.
Two parts:
1. MoqLiteSession.publish now supports multiple tracks per session,
sharing one broadcast suffix. The previous "one publisher per
session" invariant rejected the second publish() with
"already publishing", forcing a single track per session.
2. MoqLiteNestsSpeaker.startBroadcasting now opens both an audio
publisher AND a catalog publisher, pushes the manifest once, and
launches a 2s republish loop so late-attaching watchers don't wait
indefinitely for the next refresh.
The manifest shape mirrors RoomSpeakerCatalog (kotlinx.serialization
data class on the listener side):
{"version":1,"audio":[{"track":"audio/data","codec":"opus",
"sample_rate":48000,"channel_count":1}]}
Hard-coded for now since OpusEncoder is fixed at 48kHz mono.
Hot-swap path (ReconnectingNestsSpeaker session refresh) is NOT yet
wired to recycle the catalog publisher — acceptable trade-off for a
diagnostic landing; follow-up will move the catalog republisher into
HotSwappablePublisherSource so it survives JWT refreshes.
Claude
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