[A-EDev]

Summary

• Each side of a swipe on a song in Up next is now a setting (Play next, Move to end or Remove from queue) under Player appearance, Music player. Left defaults to Play next and right to Remove, and a removed song can be put back with Undo.
• Subscription groups move as soon as you drag them, and the new order is saved once when you drop. The handle has a 48 dp target and Move up and Move down accessibility actions.
• Likes restored from a backup or synced from another device keep their like order, and liked lists are read newest first by like date, so lists already restored in reverse order put themselves right.
• A Google Takeout import puts a playlist in Music when most of its items are known music. Any saved playlist can move between Music and Videos from its menu.
• Once music has been paused for 12 s while offloaded, the player leaves audio offload so the paused track is released, and offload comes back on resume. A speed or pitch that is not 1 also keeps offload off.
• The playlist and music collection page states move into their own files, since both view models were close to the 600-line ceiling.

Related issue

Closes #1361
Closes #1364
Closes #1365
Closes #1367
Closes #1368

Change type

• Bug fix
• Feature
• Refactor or maintenance
• Build, packaging, or CI
• Documentation

Validation

• ./gradlew :app:assembleGithubDebug passed
• ./gradlew :app:testGithubDebugUnitTest passed: 4,252 tests in 682 classes, 0 failures, 3 skipped
• I ran any additional flavor-specific build or test tasks affected by this change: ./gradlew ktlintCheck and ./gradlew :app:compileFossDebugKotlin passed
• I manually tested the affected behavior on an Android device or emulator: queue swipes with both settings, Undo, radio rows, group reordering, and moving a playlist to Music and back

Test device and Android version: Xiaomi 2311DRK48G, Android 16

Screenshots or recordings

Risk and compatibility

• Two new player preferences, queue_swipe_left_action and queue_swipe_right_action, with defaults when unset. No Room schema change: only new @Query and @Transaction DAO methods.

• Playback: offload is switched off only after a 12 s pause while offloaded, and switched back on before playback resumes. Speed and pitch are compared to 1 within 0.0001, so a saved speed of 0.99999994 still counts as unchanged.

• An Undo for a removed song does nothing if the queue before it has changed since the removal.

• The change does not introduce secrets, private data, or unexpected telemetry.

• New user-facing text uses Android string resources.

• Dependency and lockfile changes are intentional and limited to this PR.

• Room schema changes include the required version bump and migration, or this PR does not change the Room schema.

• Breaking changes and upgrade steps are clearly documented.

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