[A-EDev]

Summary

• Music player: new switch "Speed and volume swipes" (Settings › Playback › Music, off by default). With it on, vertical swipes on the left third change speed and on the right third change volume. The middle third keeps the queue and collapse swipes.
• The columns are the same thirds as the fullscreen video gestures. Swipes that start in the top bar band, or within 24 dp of a side edge, keep today's behaviour. Phone and upright tablet layouts only.
• Speed uses the video speed-swipe steps (0.1x to 4x, following the "Speed step" setting, whose row now also shows when this switch is on). It applies live and saves once on release. Volume changes the system media volume with no boost. Both show the gesture HUD in the user's chosen style, placed as in the video player (top centre, the ring in the middle, the vertical bar opposite the thumb).
• The music player now follows the player Vibration setting.
• Translations: the Russian settings_segment_colour string had a broken placeholder (%1$) that failed TranslationFormatStringsTest; it is now %1$s.
• Refactors: the gesture level HUD and the speed swipe moved to ui/components/shared/. SpeedSwipeDrag takes the player calls as lambdas, PlayerHaptics replaces the private silent haptics in VideoPlayerHost, and the HUD placement rule is shared by both players.

Related issue

Closes #1403

Change type

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

Validation

• ./gradlew :app:assembleGithubDebug
• ./gradlew :app:testGithubDebugUnitTest (4,364 tests, 0 failures)
• I ran any additional flavor-specific build or test tasks affected by this change. (./gradlew :app:compileFossDebugKotlin, ./gradlew ktlintCheck, python3 .github/scripts/nightly_notes.py --check)
• I manually tested the affected behavior on an Android device or emulator.

Test device and Android version: POCO X6 Pro 5G (2311DRK48G), Android 16

Screenshots or recordings

Risk and compatibility

• New preference key music_side_swipes, default off. With it off the music player's gestures are unchanged.

• The side-swipe handler listens in the Initial pointer pass and consumes only after vertical touch slop, so taps, the seek bar and the cover's sideways swipe are untouched.

• The Vibration setting now also silences the music player, which used to vibrate regardless.

• No Room schema change.

• 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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