- 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%)
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