Improve local agent chat and device health detection

apps/device-host-agent/tests/test_config.py

@@ -34,6 +34,8 @@ def test_load_host_agent_config_supports_local_mode() -> None:
     assert config.control_plane_url == ""
     assert config.enrollment_managed is False
     assert config.ai_planner_transport == "direct"
+    assert config.dependency_supervisor_enabled is True
+    assert config.appium_supervised is True
 
 
 def test_load_host_agent_config_parses_poll_and_retry_values() -> None: