fix(frontend): 退出登录增加原生确认兜底，修复点击无响应

admin-frontend/src/layouts/AdminLayout.vue

@@ -137,16 +137,26 @@ function badgeFor(item) {
 }
 
 async function logout() {
+  let confirmed = false
   try {
     await ElMessageBox.confirm('确定退出管理员登录吗？', '退出登录', {
       confirmButtonText: '退出',
       cancelButtonText: '取消',
       type: 'warning',
     })
-  } catch {
-    return
+    confirmed = true
+  } catch (error) {
+    const reason = String(error || '').toLowerCase()
+    if (reason === 'cancel' || reason === 'close') return
+    try {
+      confirmed = window.confirm('确定退出管理员登录吗？')
+    } catch {
+      confirmed = false
+    }
   }
 
+  if (!confirmed) return
+
   try {
     await api.post('/logout')
   } finally {