fix: auto-assign tasks to PM agent when moved to in_progress, fix datetime serialization in WebSocket, add executor logging

dashboard/backend/routers/opc_ws.py

@@ -74,24 +74,44 @@ async def websocket_endpoint(websocket: WebSocket):
 
 async def broadcast_task_update(task_id: int, action: str, task_data: dict):
     """Broadcast task update to all connected clients"""
+    # Serialize datetime objects to ISO format
+    serialized_data = task_data.copy()
+    for key in ["created_at", "updated_at", "completed_at", "due_date"]:
+        if serialized_data.get(key):
+            serialized_data[key] = serialized_data[key].isoformat() if hasattr(serialized_data[key], 'isoformat') else serialized_data[key]
+
+    timestamp = task_data.get("updated_at")
+    if timestamp and hasattr(timestamp, 'isoformat'):
+        timestamp = timestamp.isoformat()
+
     message = {
         "type": "task_update",
         "task_id": task_id,
         "action": action,  # created, updated, moved, deleted
-        "data": task_data,
-        "timestamp": task_data.get("updated_at")
+        "data": serialized_data,
+        "timestamp": timestamp
     }
     await manager.broadcast(message)
 
 
 async def broadcast_agent_execution(execution_id: int, status: str, execution_data: dict):
     """Broadcast agent execution update"""
+    # Serialize datetime objects to ISO format
+    serialized_data = execution_data.copy()
+    for key in ["started_at", "completed_at"]:
+        if serialized_data.get(key):
+            serialized_data[key] = serialized_data[key].isoformat() if hasattr(serialized_data[key], 'isoformat') else serialized_data[key]
+
+    timestamp = execution_data.get("started_at") or execution_data.get("completed_at")
+    if timestamp and hasattr(timestamp, 'isoformat'):
+        timestamp = timestamp.isoformat()
+
     message = {
         "type": "agent_execution",
         "execution_id": execution_id,
         "status": status,  # pending, running, completed, failed, pending_approval
-        "data": execution_data,
-        "timestamp": execution_data.get("started_at") or execution_data.get("completed_at")
+        "data": serialized_data,
+        "timestamp": timestamp
     }
     await manager.broadcast(message)