feat: 节点测速auto调整

lib/app/modules/hi_node_list/controllers/hi_node_list_controller.dart

@@ -98,6 +98,7 @@ class HINodeListController extends GetxController with WidgetsBindingObserver {
   void onInit() {
     super.onInit();
     WidgetsBinding.instance.addObserver(this);
+    _loadSelectedCountry();
   }
 
   @override
@@ -124,4 +125,14 @@ class HINodeListController extends GetxController with WidgetsBindingObserver {
     WidgetsBinding.instance.removeObserver(this);
     super.onClose();
   }
+
+  Future<void> _loadSelectedCountry() async {
+    try {
+      final v =
+          await KRSecureStorage().kr_readData(key: 'SELECTED_COUNTRY_TAG');
+      if (v != null && v.isNotEmpty) {
+        homeController.kr_coutryText.value = v;
+      }
+    } catch (_) {}
+  }
 }