- **State Management**:
    - Introduced `stablePlayerStateInfrequent` in `PlayerViewModel` to decouple structural playback changes (song, play/pause) from high-frequency position updates, reducing unnecessary recompositions across most screens.
    - Added `currentPlaybackPosition` flow for components requiring real-time updates (seek bars, lyrics).
    - Updated `PlaybackStateHolder` to suppress redundant state updates when values are unchanged.

- **UI & Performance**:
    - Migrated major screens (`Home`, `Library`, `AlbumDetail`, `PlaylistDetail`, etc.) to use `stablePlayerStateInfrequent`.
    - Refactored `UnifiedPlayerSheet` and `LyricsSheet` to use granular position flows instead of the full UI state.
    - Quantized position strings in `FullPlayerContent` to update only every second, minimizing UI churn.

- **Accessibility & Controls**:
    - Implemented accessibility semantics for `WavySliderExpressive` and `WavyMusicSlider`, including `semanticsLabel` and quantized `ProgressBarRangeInfo` to reduce accessibility event noise.
    - Refined haptic feedback granularity in `WavyMusicSlider`.

- **Animations**:
    - Replaced `InfiniteTransition` with manual `Animatable` loops in `PlayingEqIcon` to allow clean pausing/resuming of animations based on playback state.