Real testing (Safari + Firefox, fresh rejoins) confirmed VP9 selection
always falls back to VP8 - our fork's buildPublishOptions() forces
simulcast:true unconditionally, which breaks LiveKit's SVC negotiation
path that vp9/av1 require. This is the same failure mode originally
suspected in the 2026-07-28 incident; the "LiveKit handles this
automatically" assumption from doc research did not hold up in
practice. Reverting to the known-safe VP8/H.264/H.265 SFU allow-list
and widget image. Root cause documented in Issue #11 for a future,
scoped fix (conditional simulcast vs. scalabilityMode per codec).
Thore Cimbal
23c66c97b8