fix: don't await executor.start() as it's an infinite loop - create task instead

dashboard/backend/services/agent_executor.py

@@ -319,13 +319,16 @@ async def get_executor() -> AgentExecutor:
 
 
 async def start_executor():
-    """Start the executor service"""
+    """Start the executor service - initializes and starts the background task"""
     print("start_executor() called")
     try:
         executor = await get_executor()
         print(f"Executor obtained: {executor is not None}, running: {executor.running}")
-        await executor.start()
+        # Don't await start() - it's an infinite loop!
-        print("Executor start() completed (should not reach here as start() is infinite loop)")
+        # Just call it to set running=True and start the loop
+        # The task will be managed by the caller
+        asyncio.create_task(executor.start())
+        print("Executor background task created")
     except Exception as e:
         print(f"ERROR in start_executor: {e}")
         import traceback