- Fix SocketCommunicator.receive_message() to handle messages larger than 4096 bytes
- Read complete JSON messages by accumulating data until newline delimiter
- Prevent JSON decode errors when responses exceed socket buffer size
- Complete implementation of multi-step prompts for analyze and training
- Training page now sends video and audio prompts with split_media always included
- Worker_training handles multi-step prompts with video processing and audio placeholder
- Analyze page passes analyze_audio option to worker_analyze

All changes follow the AI.PROMPT rules for database migrations and API updates.