fix: bug when cancelling tasks, tool call message subkind

backend/src/inference.py

@@ -358,8 +358,7 @@ async def openrouter_chat_completion(app, messages, model, tools=[], opts={}, ag
 
         async for event in stream_response:
             if agent_run and agent_run.cancelled:
-                print(f"Cancelling openrouter inference for run {agent_run.id}")
-                # TODO: Need to cancell?
+                stream_response.cancel()
                 break
                 
             if event.choices and len(event.choices) > 0:
@@ -402,6 +401,8 @@ async def openrouter_chat_completion(app, messages, model, tools=[], opts={}, ag
     def handle_done(task):
         try:
             task.result()
+        except asyncio.CancelledError:
+            print("[openrouter] inference cancelled")
         except Exception as e:
             print(f"[openrouter] Worker error: {e}")
             print(traceback.format_exc())