…le components and screens.

- **UI Components**:
    - **QueueBottomSheet**: Wraps the `LazyColumn` in a `Box` to accommodate the new `ExpressiveScrollBar`. Adjusted content padding dynamically based on scroll state and reduced start/end offsets for a tighter layout.
    - **FileExplorerBottomSheet**: Moved horizontal padding to the parent container and integrated the `ExpressiveScrollBar` with custom padding to account for the Floating Action Button.
    - **SongPickerBottomSheet**: Implemented `rememberLazyListState` and added the `ExpressiveScrollBar`. Updated `PaddingValues` to handle right-side spacing conditionally when scrolling is active.
- **Screens**:
    - **PlaylistDetailScreen**: Refactored the song list into a `Box` layout to support the `ExpressiveScrollBar`. Added haptic feedback logic to reorderable items and tuned the scrollbar's vertical padding to clear the MiniPlayer.
    - **GenreDetailScreen**: Added the `ExpressiveScrollBar`, configuring it to only appear when the top bar is mostly collapsed (>95%) to prevent visual overlap with the header. Optimized list end-padding to prevent text from being obscured by the scrollbar.
- **General**:
    - Consistent adoption of dynamic end-padding in `LazyColumn` instances across the app to improve visual balance when scrollbars are visible.

…I component structure.

- **GenreDetailScreen**:
    - Converts the monolithic `displaySections` loop into a flat `LazyColumn` structure using `LazyListScope` extensions, improving scroll performance and memory usage.
    - Refactors `ArtistSectionItem` and `AlbumSectionItem` into `ArtistSection` and `AlbumSection` `LazyListScope` extensions to avoid nested scrolling and better handle item animations.
    - Updates section layouts to use `AbsoluteSmoothCornerShape` and `Surface` for more consistent card-like appearances with rounded corners that respect section boundaries.
    - Improves `FlatList` section rendering by utilizing `animateItem()` and consistent vertical spacing.
- **UI Components**:
    - Introduces `AlbumSectionItems` as a shared logic handler for both standalone album sections and albums embedded within artist sections.
    - Implements dynamic shape calculation for song items within albums, ensuring smooth transitions and rounded corners for the first and last items in a group.
    - Refines background color consistency for containers, ensuring the `surfaceContainerLow` theme is applied correctly throughout the scrollable list.
- **Miscellaneous**:
    - Adds `StablePlayerState` imports and updates method signatures to ensure state stability during re-compositions.
    - Optimizes image loading in artist headers by pre-finding artist metadata before rendering list items.

- **Data Models**:
    - Moves `SortOption`, `SectionData`, and `AlbumData` to the top of the file for better visibility and organization.
    - Changes `SortOption` visibility to `private`.
- **UI & Styling**:
    - Cleans up `GenreHeader` by removing redundant comments and simplifying local variable usage.
    - Updates `AlbumSection` and `AlbumSectionItems` to use the imported `StablePlayerState` instead of its fully qualified name.
    - Refines internal spacing and removes hardcoded color comments in favor of standard `MaterialTheme` references.
- **Code Health**:
    - Removes unnecessary boilerplate comments and simplifies logic within `LazyListScope` extensions.
    - Optimizes `GenreHeader` alpha and color interpolation logic for smoother transitions.