- 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
