- Register DeezerDownloadService and DeezerMetadataService as Singleton
to properly share state across requests (rate limiting, download tracking)
- Fix race condition in LocalLibraryService.LoadMappingsAsync with
double-check locking pattern
- Dispose HttpRequestMessage objects to prevent memory leaks (4 occurrences)
- Handle fire-and-forget TriggerLibraryScanAsync with proper error logging
- Replace Console.WriteLine with ILogger in SubsonicController
- Fix while loop in DownloadSongAsync to refresh activeDownload state
- Use modern C# range operator syntax for Substring calls
- Clean up appsettings.json template (remove private IP, clear ARL token)
- Add documentation comment for Blowfish decryption key
- Add downloads directory to gitignore
- Port JavaScript DeezerDownloader to C#
- Add Deezer API authentication with ARL token
- Implement track download via media.deezer.com API
- Add Blowfish CBC decryption for encrypted chunks (uses OpenSSL)
- Add rate limiting and retry with exponential backoff
- Update config for Deezer ARL tokens
- Configure Subsonic URL to 192.168.1.12:4533
