feat(llm): support incremental Responses WebSocket transport

tests/unit/mcp/test_automation_tools.py

@@ -72,6 +72,8 @@ async def test_config_requires_explicit_persistence_and_excludes_secrets(monkeyp
     payload = request.call_args.kwargs["json"]
     assert payload["rate_limit_retry_seconds"] == 90
     assert payload["tool_fallback_model"] == "gpt-6-luna"
+    await tools.mobile_config(changes={"transport": "websocket"}, persist_defaults=True)
+    assert request.call_args.kwargs["json"]["transport"] == "websocket"
 
 
 @pytest.mark.asyncio