refactor: move mcp auth record ownership

tests/wf_mcp/service/test_adapters.py

@@ -25,7 +25,9 @@ async def test_service_catalog_preserves_json_schema_description_metadata() -> N
     assert node["input_schema"]["properties"]["text"]["description"] == "Text to echo"
 
 
-async def test_service_preserves_content_only_tool_output_schema_for_workflows() -> None:
+async def test_service_preserves_content_only_tool_output_schema_for_workflows() -> (
+    None
+):
     service = WfMcpService(store=FileStore(local_temp_root() / "content_only_store"))
     service.register_connection(
         ConnectionConfig(
@@ -42,7 +44,9 @@ async def test_service_preserves_content_only_tool_output_schema_for_workflows()
     assert node["output_schema"]["required"] == ["content"]
 
 
-async def test_service_wrapped_tool_adapter_model_validates_simple_schema_types() -> None:
+async def test_service_wrapped_tool_adapter_model_validates_simple_schema_types() -> (
+    None
+):
     service = WfMcpService(store=FileStore(local_temp_root() / "adapter_model_store"))
     service.register_connection(
         ConnectionConfig(id="demo.personal", server="demo", account="personal")