fix: support max reasoning and custom model selection for 1.0.0

tests/unit/admin_console/test_model_settings.py

@@ -125,16 +125,30 @@ def test_reasoning_retry_settings_roundtrip(isolated_settings):
     assert parse_llm_config().operator.reasoning_effort == "default"
 
 
-def test_responses_payload_has_reasoning_and_no_sdk_retry(monkeypatch):
+def test_max_reasoning_and_custom_model_survive_reload(isolated_settings):
+    result = service.save_model_settings(
+        service.ModelSettingsUpdate(model="custom/model-v2", reasoning_effort="max")
+    )
+    assert result["model"] == "custom/model-v2"
+    assert result["reasoning_effort"] == "max"
+    assert dotenv_values(isolated_settings)["OPENAI_REASONING_EFFORT"] == "max"
+    reloaded = Settings(_env_file=isolated_settings)
+    assert reloaded.OPENAI_REASONING_EFFORT == "max"
+    assert reloaded.OPENAI_MODEL == "custom/model-v2"
+    assert parse_llm_config().operator.reasoning_effort == "max"
+
+
+@pytest.mark.parametrize("effort", ["high", "max"])
+def test_responses_payload_has_reasoning_and_no_sdk_retry(monkeypatch, effort):
     from artemis.llm.router import ModelEndpoint, ModelFactory
     from unittest.mock import Mock
 
     factory = Mock()
     monkeypatch.setattr("langchain_openai.ChatOpenAI", factory)
     ModelFactory.create_model(
-        ModelEndpoint(api_key="test-only", reasoning_effort="high", max_retries=5)
+        ModelEndpoint(api_key="test-only", reasoning_effort=effort, max_retries=5)
     )
-    assert factory.call_args.kwargs["reasoning_effort"] == "high"
+    assert factory.call_args.kwargs["reasoning_effort"] == effort
     assert factory.call_args.kwargs["max_retries"] == 0
     assert factory.call_args.kwargs["use_responses_api"] is True
     ModelFactory.create_model(ModelEndpoint(api_key="test-only", reasoning_effort="default"))