- Fixed process type mapping in queue manager ('analyze' -> 'analysis', 'train' -> 'training')
- Implemented actual job sending in cluster master assign_job_to_worker()
- Modified cluster client to forward jobs to local backend and monitor results
- Added result polling mechanism for cluster jobs
- Jobs should now execute on connected cluster workers instead of remaining queued

The issue was that jobs were being assigned but never sent to workers. Now:
1. Queue manager selects worker using VRAM-aware logic
2. Cluster master assigns job and sends it via websocket
3. Cluster client receives job and forwards to local backend
4. Cluster client polls backend for results and sends back to master
5. Results are properly returned to web interface