- **PlaylistContainer**:
    - Add `UnstableApi` opt-in annotation.
    - Use shortened reference for `ExpressiveScrollBar`.
- **WavySliderExpressive**:
    - Add `trackEdgePadding` parameter to control horizontal track insets independently of thumb radius.
    - Implement thumb position clamping to ensure the thumb remains within canvas bounds regardless of its dynamic width/height during interaction.
- **FullPlayerContent**:
    - Standardize horizontal insets for the player's progress section (slider and time labels).
    - Pass `trackEdgePadding` and `horizontalTrackInset` through the player UI hierarchy to ensure alignment between the wavy slider and time display.