@patch("dotigent.backend.app.core.agent_runtime.AgentRuntime")
def test_agents_with_patched_runtime(RuntimeMock):
    instance = RuntimeMock.return_value
    instance.list_agents = AsyncMock(return_value=[{"id":"a1"}])
    from dotigent.backend.app.main import app
    with TestClient(app) as client:
        resp = client.get("/agents")
        assert resp.json() == [{"id":"a1"}]