Log cluster job_id on cancellation

- Show actual cluster job_id in cancellation log
- More informative logging with job_xxx format
- Consistent with assignment logging

vidai/queue.py

@@ -73,18 +73,20 @@ class QueueManager:
             return False
 
         # If job was processing, send cancel command to worker and clean up active job
+        cancelled_job_id = None
         if job['status'] == 'processing':
             from vidai.cluster_master import cluster_master
             for job_id, job_info in cluster_master.active_jobs.items():
                 if job_info.get('queue_id') == queue_id:
                     # Send cancel command to worker
                     cluster_master._cancel_job_processing(job_id)
+                    cancelled_job_id = job_id
                     break
 
         # Update status to cancelled
         update_queue_status(queue_id, 'cancelled')
 
-        print(f"Job {queue_id} cancelled")
+        print(f"Job {cancelled_job_id or queue_id} cancelled")
 
         return True