Plan item C6 step 3 for playback: the eight Eager components in
libs/ui/playback (video.js, ArtPlayer, HTML5/hls/mpegts, audio player,
web player view, VOD details, sidebar, external-player dialog) and the M3U
video player and VOD detail switch to OnPush. The player libraries' events
already reach the UI through the signal-backed controls adapter or
outputs, and the players' DOM belongs to the libraries.
The M3U video player rendered three plain fields written outside template
events: the channel-number overlay, cleared by a 2 s debounce timer, and
the player choice, written from an IndexedDB read and a settings effect.
They are signals now, and a test checks that the overlay leaves the DOM
when the timer fires.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>