Player layout, one song menu, predictive back, swipe actions, cross-device library sync, takeover and playback fixes

[ingoau]

Android UI

• Full player
  • The artwork sits at the top with the title directly under it, and the remaining controls are spread over the rest of the screen.
  • The album name now also shows in the lyrics, queue and about modes.
  • Tapping "Playing on …" opens the device picker.
  • "Playing from" shows the queue's name, and tapping it opens a new queue switcher sheet.
  • When the player is collapsed from lyrics, queue or about, only the big artwork flies to the mini player. Before, the small thumbnail floated over the UI.
• One song menu (SongMenu.kt)
  • It is hosted once at the app level, outside the moving player sheet, so swiping it away from now playing dismisses only the menu.
  • Its actions load before it opens, so it doesn't change height while you drag it.
  • It looks and behaves the same from every entry point: header, star rating, the core's actions, then context rows ("Remove from queue", "Remove from playlist", sleep timer) after a divider.
• Predictive back, Navic-style
  • During the gesture the screen you're leaving shrinks, gets rounded corners and slides away from the edge you swiped from, while the previous screen slides in.
  • This covers every destination.
  • With reduced motion on, it's a plain crossfade.
• Bottom bar: holding it no longer opens the editor. The editor is still in Settings and in the account sheet.
• Queue drag fix
  • Cause: every slot the finger crossed sent a MoveQueueItem, and the core re-keys moved items, so the drag lost its item.
  • Fix: the list reorders a local copy during the drag and sends one move on drop.
• Customisable swipe actions on queue rows and song-list rows, configured in Settings → Customise → Swipe actions.
  • Uses four new synced core settings.
  • Every action runs through RunAction.
  • Known trade-off: in Library's Songs tab, a sideways swipe that starts on a song row runs its swipe action instead of changing tab. Setting both list directions to None restores the old behaviour.

Core + both platforms

• Likes, ratings and playlist edits sync everywhere
  • New additive Event::LibraryItemsChanged and Event::PlaylistChanged, emitted for local edits and undo.
  • They are relayed across devices by a new Connect Msg::LibraryEdited, which older builds ignore.
  • Receivers update only their mirror (never their outbox) and re-emit the events.
  • Android and desktop patch open views in place. Android list screens now refetch on a libraryGeneration counter, because identical LibraryChanged payloads didn't trigger a refetch.
• Taking over playback from another device
  • Cause: lease renewals go only to the owner, so after 20 s every other device's copy of the lease had expired, and handoff_to silently did nothing.
  • Fix: a device now trusts the owner the room last named. If a pull gets no takeover within 3 s, the device claims the lease itself; this covers old coordinators, gone owners and owners that can't hand off.
• Playback stopping / showing the previous song
  • Cause: ExoPlayer's auto-advance reported only TransitionedToNext, never Ended, so the session stayed on the old item. Reports for the new song were dropped, playback stopped after the next song, and pressing Next restarted it.
  • Fixed in the core (a transition to the preloaded item ends the current one) and in ExoBackend (it reports Ended first).
  • Also added: wake and Wi-Fi locks, resume after a transient focus loss, and retry with backoff on network errors.
• Android media session
  • It was never added to the service, so there was no notification or lock-screen controls and no foreground promotion. It is now added with addSession.
  • While another Connect device plays, the session reports remote playback, and a MediaRoute2ProviderService publishes the Connect devices as routes. The system output chip should show the playing device's name, and picking one in the output switcher hands off.
  • The output chip is untested on hardware.

Verification

• cargo fmt --check: clean.
• cargo clippy --workspace --all-features --all-targets -D warnings: clean.
• cargo test --workspace --all-features: passed on each agent branch with its own new tests. I'm re-running it on the merged branch locally, and CI runs it too.
• New tests: a pull-playback sim run through the coordinator, on the LAN and through an old coordinator; library-edit relay sims and two-core tests; gapless/focus actor tests.
• Android on the merged branch: testDebugUnitTest assembleDebug :app:lintDebug passes. New tests: FullPlayerLayoutTest, SongMenuTest, PredictiveBackTest, SwipeActionsTest, queue drag, ConnectRoutesTest, ExoBackendTest additions.
• Desktop: pnpm typecheck, pnpm lint (0 errors) and pnpm test (137/137) pass.

Not checked on a device: the predictive-back animation, the song menu swipe, and the system output chip.

🤖 Generated with Claude Code

https://claude.ai/code/session_01NGwmix7LtC6oSNUWgybuoY

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