camera: commento admin preciso, test timeout grab maker (Refs #106)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Jbf7qKuxsnAVjxthRy7dnB

src/frontend/flask_app/tests/test_dxf_recipe_routes.py

@@ -72,6 +72,7 @@ class TestStationCameraGrab:
         args, kwargs = post.call_args
         assert args[0] == "http://acq:8765/camera/grab"  # slash finale tolto
         assert kwargs["json"] == {"source": "camera:folder", "trigger": "continuo", "timeout_ms": 5000}
+        assert kwargs["timeout"] == 60  # #106: margine per la prima apertura GenTL
 
     def test_get_also_works(self, logged_in_client, mock_api_client):
         _stations(mock_api_client)