Lukas 94de91ffa0 feat: implement WebSocket real-time progress updates
- Add ProgressService for centralized progress tracking and broadcasting
- Integrate ProgressService with DownloadService for download progress
- Integrate ProgressService with AnimeService for scan progress
- Add progress-related WebSocket message models (ScanProgress, ErrorNotification, etc.)
- Initialize ProgressService with WebSocket callback in application startup
- Add comprehensive unit tests for ProgressService
- Update infrastructure.md with ProgressService documentation
- Remove completed WebSocket Real-time Updates task from instructions.md

The ProgressService provides:
- Real-time progress tracking for downloads, scans, and queue operations
- Automatic progress percentage calculation
- Progress lifecycle management (start, update, complete, fail, cancel)
- WebSocket integration for instant client updates
- Progress history with size limits
- Thread-safe operations using asyncio locks
- Support for metadata and custom messages

Benefits:
- Decoupled progress tracking from WebSocket broadcasting
- Single reusable service across all components
- Supports multiple concurrent operations efficiently
- Centralized progress tracking simplifies monitoring
- Instant feedback to users on long-running operations
2025-10-17 11:12:06 +02:00
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