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+# Migration Summary: Firebase → Navidrome/Subsonic
+
+## ✅ Completed Migration Tasks
+
+### 🗑️ Removed Legacy Systems
+- [x] **Firebase Dependencies**: Removed firebase, react-firebase-hooks packages
+- [x] **Static Data Files**: Moved `app/data/` (albums.ts, artists.ts, playlists.ts) to backup
+- [x] **Firebase Config**: Moved `app/firebase/` directory to backup
+- [x] **Authentication System**: Removed Firebase Auth integration
+- [x] **Database Connections**: Removed Firestore database calls
+
+### 🚀 Implemented Navidrome Integration  
+- [x] **Navidrome API Client** (`lib/navidrome.ts`)
+  - Subsonic API authentication with token-based security
+  - All major endpoints: ping, getArtists, getAlbums, getAlbum, search3, etc.
+  - Stream URL generation for audio playback
+  - Cover art URL generation with size parameters
+  - Star/unstar functionality for favorites
+  - Scrobbling support for play tracking
+
+- [x] **React Context Provider** (`app/components/NavidromeContext.tsx`)
+  - Global state management for music library data
+  - Loading states for UI feedback
+  - Error handling and connection testing
+  - Data fetching with automatic refresh
+  - CRUD operations for playlists
+
+### 🎵 Updated Audio System
+- [x] **AudioPlayerContext** - Completely rewritten for Navidrome
+  - Real audio streaming instead of static file URLs
+  - Queue management with Navidrome song objects
+  - Automatic scrobbling when tracks play
+  - Track conversion from Navidrome Song to playable Track format
+
+- [x] **AudioPlayer Component**
+  - Updated to handle Navidrome streaming URLs
+  - Dynamic cover art from Navidrome getCoverArt API
+  - Proper track metadata display (artist, album, duration)
+
+### 🎨 Updated UI Components
+- [x] **AlbumArtwork Component**
+  - Uses Navidrome Album interface
+  - Dynamic cover art with getCoverArt API
+  - Context menu integration with Navidrome playlists
+  - Proper album metadata display (year, genre, song count)
+
+- [x] **ArtistIcon Component** 
+  - Uses Navidrome Artist interface  
+  - Artist cover art support
+  - Album count display
+  - Star/unstar functionality in context menu
+
+### 📄 Updated Pages
+- [x] **Main Page** (`app/page.tsx`)
+  - Uses NavidromeContext for album data
+  - Loading states with skeleton UI
+  - Error handling for connection issues
+  - Recent and newest album sections
+
+- [x] **Album Detail Page** (`app/album/[id]/page.tsx`)
+  - Fetches album and songs from Navidrome
+  - Real-time song playback with streaming
+  - Star/unstar album functionality
+  - Proper track listing with metadata
+
+- [x] **Artist Page** (`app/artist/[artist]/page.tsx`)
+  - Artist details from Navidrome API
+  - Dynamic album grid for artist
+  - Star/unstar artist functionality
+  - Modern gradient header design
+
+- [x] **Library Pages**
+  - `app/library/albums/page.tsx` - Shows all albums in grid layout
+  - `app/library/artists/page.tsx` - Shows all artists in grid layout  
+  - `app/library/playlists/page.tsx` - Playlist management with CRUD operations
+
+### 🔧 Configuration & Documentation
+- [x] **Environment Configuration**
+  - `.env.example` with Navidrome connection settings
+  - Removed Firebase environment variables from package.json
+
+- [x] **Documentation**
+  - `NAVIDROME_MIGRATION.md` - Detailed migration guide
+  - Updated `README.md` with new setup instructions
+  - Feature documentation and troubleshooting
+
+- [x] **Type Safety**
+  - TypeScript interfaces matching Subsonic API responses
+  - Proper error handling throughout the application
+  - Type-safe component props and context values
+
+### 🧪 Testing
+- [x] **Test Suite** (`__tests__/navidrome.test.ts`)
+  - API client functionality tests
+  - TypeScript interface validation
+  - URL generation testing
+  - Configuration validation
+
+## 🎯 Key Benefits Achieved
+
+### **Real Music Streaming**
+- Replaced static MP3 URLs with dynamic Navidrome streaming
+- Support for multiple audio formats and bitrates
+- Proper audio metadata from music files
+
+### **Dynamic Library**
+- No more manual JSON file management
+- Auto-discovery of new music added to Navidrome
+- Real-time library updates
+
+### **Enhanced Features**
+- Scrobbling for play tracking
+- Star/favorite functionality
+- Playlist management (create, edit, delete)
+- Search across entire music library
+- High-quality album artwork
+
+### **Better Architecture**
+- Removed Firebase dependency completely
+- Self-hosted music solution
+- Standards-based Subsonic API integration
+- Type-safe development with proper interfaces
+
+## 🔄 Migration Path
+
+1. **Backup**: Old Firebase and static data moved to `-old` directories
+2. **Dependencies**: Firebase packages removed, crypto built-in used
+3. **Environment**: New `.env.local` needed with Navidrome credentials
+4. **Data Flow**: `Static JSON → Firebase → Navidrome API`
+5. **Authentication**: `Firebase Auth → Navidrome Server Authentication`
+6. **Streaming**: `Static Files → Navidrome Stream API`
+
+## 🚦 Ready for Production
+
+The application is now fully migrated and ready for use with any Navidrome server. All core functionality has been preserved and enhanced:
+
+- ✅ Browse music library (albums, artists, songs)
+- ✅ Audio playback with queue management  
+- ✅ Search functionality
+- ✅ Playlist management
+- ✅ Favorites/starring
+- ✅ Responsive design
+- ✅ Error handling and loading states
+
+**Next Steps**: Set up Navidrome server and configure connection in `.env.local`