- Add UnifiedPlayerAdapter to wrap UnifiedPlayer with playSession interface
- Replace dual-process player with unified A/V synchronization
- Maintain full UI compatibility with existing controls
- Support frame-accurate seeking, playback, and volume control
- Eliminate A/V sync crashes from separate video/audio processes
- Provide clean foundation for dev25 advanced features
Key changes:
- UnifiedPlayerAdapter implements all playSession methods
- Seamless integration with existing UI code
- Graceful fallback to dual-process if needed
- Stable single-process audio/video synchronization