fix: bug when cancelling tasks, tool call message subkind

backend/src/agent.py

@@ -148,7 +148,7 @@ class Agent:
                 thread_id=message.thread_id,
                 content=stream,
                 kind="log",
-                subkind="reasoning",
+                subkind="tool-call",
             )
             run.emit_event('chat-message', {
                 'messageId': new_message['id'],
@@ -220,7 +220,10 @@ class AgentRun:
         self.reasoning = None
         
         # Cancellation tracking
+        # You should use 'cancelled', task and thread are for
+        # external tasks that cannot be cancelled reliably
         self.task = None  # For asyncio tasks
+        self.thread = None
         self.cancelled = False
 
         app.tmp.runs[self.id] = self

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}")
+                stream_response.cancel()
-                # TODO: Need to cancell?
                 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())