Release v1.0.0 - Production Ready

Major Features:
- Spotify playlist injection with missing tracks search
- Transparent proxy authentication system
- WebSocket session management for external tracks
- Manual track mapping and favorites system
- Lyrics support (Spotify + LRCLib) with prefetching
- Admin dashboard with analytics and configuration
- Performance optimizations with health checks and endpoint racing
- Comprehensive caching and memory management

Performance Improvements:
- Quick health checks (3s timeout) before trying endpoints
- Health check results cached for 30 seconds
- 5 minute timeout for large artist responses
- Background Odesli conversion after streaming starts
- Parallel lyrics prefetching
- Endpoint benchmarking and racing
- 16 SquidWTF endpoints with load balancing

Reliability:
- Automatic endpoint fallback and failover
- Token expiration handling
- Concurrent request optimization
- Memory leak fixes
- Proper session cleanup

User Experience:
- Web UI for configuration and playlist management
- Real-time progress tracking
- API analytics dashboard
- Manual track mapping interface
- Playlist statistics and health monitoring

allstarr/Services/Deezer/DeezerDownloadService.cs

@@ -24,7 +24,6 @@ namespace allstarr.Services.Deezer;
 public class DeezerDownloadService : BaseDownloadService
 {
     private readonly HttpClient _httpClient;
-    private readonly SemaphoreSlim _requestLock = new(1, 1);
     
     private readonly string? _arl;
     private readonly string? _arlFallback;
@@ -33,9 +32,6 @@ public class DeezerDownloadService : BaseDownloadService
     private string? _apiToken;
     private string? _licenseToken;
     
-    private DateTime _lastRequestTime = DateTime.MinValue;
-    private readonly int _minRequestIntervalMs = 200;
-    
     private const string DeezerApiBase = "https://api.deezer.com";
     
     // Deezer's standard Blowfish CBC encryption key for track decryption
@@ -111,7 +107,10 @@ public class DeezerDownloadService : BaseDownloadService
 
         // Build organized folder structure: Artist/Album/Track using AlbumArtist (fallback to Artist for singles)
         var artistForPath = song.AlbumArtist ?? song.Artist;
-        var basePath = SubsonicSettings.StorageMode == StorageMode.Cache ? CachePath : DownloadPath;
+        // Cache mode uses cache/Music folder (cleaned up after 24h), Permanent mode uses downloads folder
+        var basePath = SubsonicSettings.StorageMode == StorageMode.Cache 
+            ? Path.Combine("cache", "Music")
+            : "downloads";
         var outputPath = PathHelper.BuildTrackPath(basePath, artistForPath, song.Album, song.Title, song.Track, extension);
         
         // Create directories if they don't exist
@@ -494,27 +493,6 @@ public class DeezerDownloadService : BaseDownloadService
         await RetryWithBackoffAsync<bool>(action, maxRetries, initialDelayMs);
     }
 
-    private async Task<T> QueueRequestAsync<T>(Func<Task<T>> action)
-    {
-        await _requestLock.WaitAsync();
-        try
-        {
-            var now = DateTime.UtcNow;
-            var timeSinceLastRequest = (now - _lastRequestTime).TotalMilliseconds;
-            
-            if (timeSinceLastRequest < _minRequestIntervalMs)
-            {
-                await Task.Delay((int)(_minRequestIntervalMs - timeSinceLastRequest));
-            }
-
-            _lastRequestTime = DateTime.UtcNow;
-            return await action();
-        }
-        finally
-        {
-            _requestLock.Release();
-        }
-    }
 
     #endregion