…ists

- **Playlist Management**:
    - Updates `PlaylistBottomSheet` to support adding multiple songs simultaneously to one or more playlists.
    - Adds `addSongsToPlaylists` to `PlaylistViewModel` for batch processing song additions via `userPreferencesRepository`.
    - Enhances playlist creation logic to allow adding a selection of songs immediately upon creating a new playlist.
    - Refines UI feedback with dynamic titles and toast notifications for batch operations.
- **UI & Multi-Selection**:
    - Updates `EnhancedSongListItem` to display selection indices (1, 2, 3...) during multi-selection mode instead of a generic check icon.
    - Integrates multi-selection support into `LibraryScreen` (Tracks and Liked Songs tabs), enabling long-press to enter selection mode and batch actions.
    - Updates song list components to handle selection toggles and provide visual feedback for selected states.
- **Component Refactoring**:
    - Refactors `PlaylistBottomSheet` to accept a `List<Song>` instead of a single `Song` entity.
    - Updates `ArtistDetail`, `AlbumDetail`, `Search`, `GenreDetail`, and `DailyMix` screens to compatible with the updated `PlaylistBottomSheet` signature.
    - Implements safer fallback mechanisms in components when handling empty song lists or null states.

- **Multi-Selection & Actions**:
    - Updates `SelectionActionRow` in `LibraryScreen` to contextually resolve the "Select All" target based on the active tab (Liked, Folders, or Songs).
    - Updates `MultiSelectionBottomSheet` to use a more emphasized typography style for the "Play All" action.
    - Replaces the `FolderZip` icon with a `Share` icon for the bulk sharing action.
- **UI & Layout**:
    - Removes zero-height and small spacers from the top of the `Artists` and `Songs` lists to streamline vertical spacing.
    - Removes the top gradient fade effect overlay in `LibrarySongsTab`.
    - Optimizes button layouts in `SongInfoBottomSheet` and `MultiSelectionBottomSheet` by removing horizontal content padding for a more compact appearance.