S4a-4a of the PlexPlayer decomposition. Move audio/subtitle track
selection + subtitle rendering into usePlexTracks: the selected-ordinal
state, change/cycle audio+subtitle, the debounced sub-offset, the audio
A/V-sync offset, and the two subtitle effects (force-showing the mounted
track + positioning cues at the user's subPos). The shared media refs
(video/hls/audio/aoff/abs/multiAudio) stay component-owned and are passed
in, since loadSession + the detail effect write audioRef too; absRef is
hoisted above the hook call for that. No behaviour change; verified by
self-E2E (subtitle on/off via 'S' mounts/removes the <track>, mode
'showing', VTT 804 cues all positioned to line=subPos, subLang persists;
playback uninterrupted). Audio switch is single-track here so cycleAudio
correctly no-ops.
S4a-3b of the PlexPlayer decomposition. Move the intro/credits auto-skip
machinery (activeMarker detection, the skipProgress countdown, doSkip,
cancelAutoSkip + the running-interval and reset-on-id effects) into
useAutoSkip. The hook returns skipProgressRef / cancelAutoSkipRef — the
forward-declaration bridge the earlier keyboard/back handlers read to
cancel a running countdown; those two stable refs are now listed in the
backIntent/keyboard dep arrays (they were provably-stable local refs
before, params now). No behaviour change; verified by self-E2E (credits
marker detected -> countdown fill renders + advances while playing ->
auto-skip fires -> item marked Watched + player closes).
S4a-3a of the PlexPlayer decomposition. Move two byte-equivalent
behaviours into lib/plexPlayerHooks.ts: usePlexProgress (the 10s
interval flush + pause/pagehide beacon + reopen cache-patch checkpoint;
absRef stays in the component since seek/skip/ended mutate it too) and
usePlayerVolume (HTML5 <video> 0..1 volume + independent mute, persisted
+ re-applied per session). usePlayerVolume is the seam the later R12
volume-consolidation sprint will rework to share playerVolume.ts's
tested pure core with the YouTube player. No behaviour change; verified
by self-E2E (volume-bar sets + persists video.volume, 'm' toggles mute
keeping the level, pause fires plexProgress 200).
S4a-2 of the PlexPlayer decomposition. Move three self-contained,
byte-equivalent behaviours into lib/plexPlayerHooks.ts: useWallClock
(15s top-bar clock), useFullscreen (wrapper fs toggle + reactive flag),
and useControlsVisibility (auto-hiding control bar + wake). The ref
mirrors the hooks read (barAutoHide/menuOpen/video-paused) stay in the
component and are passed in, so the timer sees fresh state. No behaviour
change; verified by self-E2E (real HLS playback: clock renders, controls
auto-hide after 3s while playing, wake restores + stays while paused).
peter