- Created reusable EmptyState component with icon, title, description, and action support
- Improved empty state in PlaylistList with better messaging and icons
- Improved empty states in UserProfilePage for tracks and playlists tabs
- Added contextual messages based on whether viewing own profile or others
- Added helpful descriptions and icons to all empty states
- Empty states now provide clear guidance on what users can do next
- All list views now have consistent and helpful empty state messaging
- Added filtering by genre and format with dropdown selects
- Added sorting by date, title, and popularity with order toggle
- Added bulk operations: select multiple tracks, bulk delete, bulk update
- Added bulk mode toggle with selection checkboxes
- Added batch delete and batch update API functions
- Added pagination controls
- Improved UI with filter bar and sort dropdown
- Added toast notifications for operations
- Added select all/deselect all functionality
- Fixed queue_job_id: number -> string in hlsService.ts
- Fixed track_id: number -> string in trackService.ts
- Fixed id: number -> string in usePlaylistNotifications.ts
- Fixed Role.id, Permission.id, UserRole.id, UserRole.role_id, AssignRoleRequest.role_id: number -> string in role.ts
- Fixed playlist_id: number -> string in PlaylistAnalytics.tsx
- All IDs now consistently use string (UUID) type matching backend DTOs
- Backend already uses uuid.UUID for all entity IDs
Phase: PHASE-1
Priority: P0
Progress: 7/267 (2.6%)
- Unified token storage to use TokenStorage service
- Removed deprecated token-manager.ts
- Removed fallback storage logic in API client
- Updated tests and feature components to use TokenStorage
Resolves: INT-000002
Severity: P0
