fix tests

tests/test_agents.py

@@ -137,7 +137,7 @@ async def test_dummyenv(self, dummy_env: DummyEnv, model_name: str) -> None:
         # Check serialization after get_asv runs to ensure private
         # Ops aren't included
         assert agent.model_dump() == {
-            "hiode_old_env_states": False,
+            "hide_old_env_states": False,
             "llm_model": {"model": model_name, "temperature": 0.1},
             "sys_prompt": None,
         }