完善刷新页面展示bug

layouts/admin/AdminLayout.uvue

@@ -116,7 +116,8 @@ import {
   closeAllTabs,
   toggleMainAsideCollapse as storeToggleCollapse,
   toggleSubSider as storeToggleSubSider,
-  initNavState
+  initNavState,
+  restoreNavState
 } from '@/layouts/admin/store/adminNavStore.uts'
 import type { TabItem } from '@/layouts/admin/store/adminNavStore.uts'
 
@@ -418,10 +419,18 @@ onMounted(async () => {
   // #endif
 
   isAuthReady.value = true
-  initNavState()
-  if (props.currentPage != '') {
-    openRoute(props.currentPage as string)
+
+  // 第二段：尝试从 sessionStorage 恢复上次打开的页签状态
+  // restoreNavState 会校验路由有效性和权限，过滤无效项后重建 tabs
+  const restored = restoreNavState()
+  if (!restored) {
+    // 首次打开 / 缓存为空 / 恢复失败 → 走默认初始化（只有首页tab）
+    initNavState()
+    if (props.currentPage != '') {
+      openRoute(props.currentPage as string)
+    }
   }
+  // restored=true 时，activeRouteId 已由 restoreNavState 正确设置，无需额外跳转
   
   // 初始化窗口宽度
   windowWidth.value = uni.getWindowInfo().windowWidth