fix(server): clear _task_control on stop_task to prevent terminate

packages/ai/src/ai/modules/task/task_server.py

@@ -1314,7 +1314,11 @@ async def stop_task(self, token: str):
 
             # Only terminate tasks that were launched or executed directly
             if control.launch_type in (LAUNCH_TYPE.LAUNCH, LAUNCH_TYPE.EXECUTE):
-                await control.task.stop_task()
+                # Route through the shared cleanup helper so the registry slot,
+                # monitor subscriptions, and the task_removed dashboard event are
+                # all handled consistently. Without this, a subsequent use() with
+                # the same token races against a phantom registry entry.
+                await self.remove_task(token)
                 self.debug_message(f'Task "{control.id}" stopped on request')
 
         except Exception as e:

packages/client-typescript/tests/RocketRideClient.test.ts

@@ -174,7 +174,7 @@ describe('RocketRideClient Integration Tests', () => {
 			expect(Object.values(TASK_STATE)).toContain(status!.state);
 
 			await client.terminate(result.token);
-		}, 90000);
+		}, TEST_CONFIG.timeout);
 
 		it(
 			'should terminate a pipeline',