tests/test_idle_heartbeat_integration.py

@@ -39,6 +39,9 @@ async def test_idle_heartbeat_end_to_end(tmp_path):
     # Create components
     bus = MessageBus()
     sessions = SessionManager(workspace)
+    # Override sessions_dir to use tmp_path for test isolation
+    sessions.sessions_dir = tmp_path / "sessions"
+    sessions.sessions_dir.mkdir()
     loop = AgentLoop(
         bus=bus,
         provider=provider,