Fix model optimisation

modules/ANSODEngine/ANSOVFaceDetector.h

@@ -25,6 +25,10 @@ namespace ANSCENTER {
         std::mutex              _mtx;
         std::string             _modelFilePath;
         std::unique_ptr<SCRFD>  _face_detector = nullptr;
+
+        // DML device-lost recovery (see ANSONNXYOLO.h for rationale)
+        bool _dmlDeviceLost{ false };
+        std::string _scrfdModelPath;  // cached for CPU fallback recreation
         std::vector<Object>     _movementObjects;
 		int                     _retainDetectedFaces{ 0 };
         std::vector<Object> Inference(const cv::Mat& input, const std::string& camera_id, bool useDynamicImage = true, bool validateFace=false);