feat: 修改城市auto模式下节点显示问题

lib/app/modules/hi_node_list/views/hi_node_list_view.dart

@@ -91,9 +91,8 @@ class HINodeListView extends GetView<HINodeListController> {
                   // 🔧 修复：改为 async，等待节点切换完成后再关闭列表
                   onTap: () async {
                     try {
-                      await KRSecureStorage().kr_saveData(
-                          key: 'SELECTED_COUNTRY_TAG', value: 'auto');
-                      controller.homeController.kr_coutryText.value = 'auto';
+                      controller.homeController
+                          .kr_setSelectedCountryTag('auto');
                       final success = await controller.homeController
                           .kr_performNodeSwitch('auto');
                       if (success) {
@@ -182,11 +181,8 @@ class HINodeListView extends GetView<HINodeListController> {
                   return InkWell(
                     onTap: () async {
                       try {
-                        await KRSecureStorage().kr_saveData(
-                            key: 'SELECTED_COUNTRY_TAG',
-                            value: country.country);
-                        controller.homeController.kr_coutryText.value =
-                            country.country;
+                        controller.homeController
+                            .kr_setSelectedCountryTag(country.country);
                         final fastest = findFastestNode(country.outboundList);
                         final success = await controller.homeController
                             .kr_performNodeSwitch(fastest.tag);