Fix cluster nodes API to show actual worker counts

- Get real worker process information from cluster master instead of placeholder data
- Display correct number of workers and their actual backends
- Improve accuracy of cluster node statistics

vidai/web.py

@@ -482,9 +482,30 @@ def api_cluster_nodes():
                 'workers': []  # Will collect worker details
             }
 
-        # For now, we don't have worker details in database, so we'll use placeholder
-        # In a full implementation, you'd store worker info in database too
-        # For now, assume standard workers based on available backends
+        # Get actual worker processes from cluster master
+        from .cluster_master import cluster_master
+        client_id = None
+        for cid, client_info in cluster_master.clients.items():
+            if client_info['token'] == token:
+                client_id = cid
+                break
+
+        if client_id:
+            # Get registered processes for this client
+            workers = []
+            for proc_key, proc_info in cluster_master.processes.items():
+                if proc_info['client_id'] == client_id:
+                    worker_info = {
+                        'type': proc_info['name'].split('_')[0],  # analysis or training
+                        'backend': proc_info['name'].split('_')[1] if '_' in proc_info['name'] else 'unknown',
+                        'weight': proc_info.get('weight', 10),
+                        'model': proc_info.get('model', 'default'),
+                        'status': proc_info.get('status', 'active')
+                    }
+                    workers.append(worker_info)
+            node_map[node_key]['workers'] = workers
+        else:
+            # Fallback: assume standard workers based on available_backends
             workers = []
             for backend in available_backends:
                 workers.extend([