refactor(playlists): extract PlaylistList into playlist-list module
- Add playlist-list/ with usePlaylistList, PlaylistListToolbar, PlaylistListEmpty,
PlaylistListError, types; keep PlaylistListSkeleton at components level
- Re-export from PlaylistList.tsx for backward compatibility
- Stories: Default, Grid, Empty (MSW), Loading (skeleton, min-h-layout-story)
- Replace min-h-[44px] with min-h-11; no arbitrary values
- Tests: assert French labels and Pagination text; fix skeleton test
Co-authored-by: Cursor <cursoragent@cursor.com>
2134d27058