Every step now beacons with millisecond offsets:
branch-decision -> new-hls-ok -> loadsource-called -> attach-ok ->
manifest-loaded -> level-loaded -> frag-loaded(1..2) -> buffer-appended
-> do-play -> play-resolved/play-rejected(name) + EVERY hls.js error
(fatal and silent retries). Plus a watchdog: if not playing within 15s,
it snapshots {readyState, networkState, paused, buffered, hls.state,
overlay text} every 15s (x6) — so a silent death anywhere produces a
state dump instead of nothing.
Verified on desktop: healthy timeline lands end-to-end, playback OK,
18/18 tests. assets v=13.
jozamudi
aaaf8e9308