Enable log information. Disable NPU in U9

engines/ONNXEngine/ONNXEngine.cpp

@@ -1,8 +1,10 @@
 #include "ONNXEngine.h"
 #include "EPLoader.h"
+#include "OpenVINODeviceConfig.h"
 #include "Utility.h"
 
 #include <algorithm>
+#include <cctype>
 #include <limits>
 #include <filesystem>
 #include <fstream>
@@ -318,8 +320,9 @@ namespace ANSCENTER {
 
         std::vector<std::unordered_map<std::string, std::string>> try_configs;
 
-        // Only try NPU if it hasn't been probed yet or was previously available
-        if (!s_npuProbed || s_npuAvailable) {
+        // NPU is disabled by default — see OpenVINODeviceConfig.h. Opt in via
+        // OPENVINO_ENABLE_NPU=1. Even when enabled, skip if a prior probe failed.
+        if (IsOpenVINONpuEnabled() && (!s_npuProbed || s_npuAvailable)) {
             try_configs.push_back(makeConfig("AUTO:NPU,GPU"));
         }
         try_configs.push_back(makeConfig("GPU.0"));