The CH badge by the scrubber is now a button opening a list of every chapter
(number, title, start time); the playing one is highlighted and scrolled into
view, a tap seeks there (and resumes if paused). Works with shared chapters and
YouTube's.
- A single dock button cycles the service view; video is skipped in audio-only mode
- Visualizer reacts to the audio where the EQ graph is available and falls back
to an ambient pulse on iOS so background playback is never routed through Web Audio
- Album art shows the song artwork with the letterbox cropped
- A-/A+ box steps lyrics, title and channel size from -2 to +2 in every theme
- Glass Stage dock is slightly more compact
- Playlist title wraps within 90% of the width; rename and share are icons beside it,
and tapping the title opens the rename box showing the full name
- Offline, pin, select and delete are icon buttons to the right of the filter input
- Transport is one row again: prev, back 10, play, forward 10, next
- Update download stages each file as it arrives so a retry only fetches what is
missing, keeps 4 requests in flight and allows 5 minutes
