fix(frontend): 菜单点击偶发无响应三处根因——①路由懒加载chunk失败被静默吞掉(新增onError自动整页重载+保险丝防循环) ②首页入口被权限接口阻塞(改乐观显示+缓存TTL10分钟+超时30s→8s) ③菜单hover预取目标页chunk(工具卡片/工作流步骤/顶部导航)

frontend-vue/src/pages/home/DesktopHomePage.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="home-root" :class="{ 'nav-permissions-loading': !permissionReady }">
+  <div class="home-root">
     <header class="header">
       <span class="header-title">数富AI</span>
       <div class="header-right">
@@ -59,7 +59,7 @@
 <script setup lang="ts">
 import { computed, onMounted, ref } from 'vue'
 import { restoreLoginUser } from '@/shared/auth/ensure-auth'
-import { getCurrentUserAppColumnRaw, type PermissionMenuItem } from '@/shared/api/permission'
+import { getCurrentUserAppColumnRaw, readCachedAppColumnPermissions, type PermissionMenuItem } from '@/shared/api/permission'
 import { useVersionUpdate } from '@/shared/composables/useVersionUpdate'
 import { resolvePageHref } from '@/shared/page-prefix'
 
@@ -73,10 +73,10 @@ const { checking, updating, currentVersion, hasUpdate, canDownload, hint, checke
 const logoutHref = computed(() => `${resolvePageHref('/new_web_source/login.html')}?logout=1`)
 
 // 桌面端首页仅保留一级入口：亚马逊 / 视频；图片已收进视频页（/image-video）二级菜单。
+// 入口先乐观显示（接口返回后按权限隐藏），避免权限接口慢时首页入口空白"点不了"。
 type PermissionState = { amazon: boolean; video: boolean }
-const permissionState = ref<PermissionState>({ amazon: false, video: false })
+const permissionState = ref<PermissionState>({ amazon: true, video: true })
 const permissionUnavailable = ref(false)
-const permissionReady = ref(false)
 
 const amazonHref = computed(() => resolvePageHref('/new_web_source/amazon-console.html'))
 const videoHref = computed(() => resolvePageHref('/new_web_source/image-video.html'))
@@ -125,18 +125,24 @@ async function loadPermissions() {
   const currentUid = getUid()
   if (!currentUid) {
     permissionUnavailable.value = true
-    permissionReady.value = true
     return
   }
+  // 先用本地缓存立即渲染入口（有缓存时接口失败也不让入口消失）
+  const cached = readCachedAppColumnPermissions(Number(currentUid))
+  if (cached) {
+    permissionState.value = computePermissionState(cached)
+  }
   try {
     // 经 shared/api/permission 层拉取原始权限菜单项（含本地缓存写入；接口失败走 catch）
     const items = await getCurrentUserAppColumnRaw()
     permissionState.value = computePermissionState(items)
     permissionUnavailable.value = false
   } catch {
-    permissionUnavailable.value = true
+    // 无缓存才退回"显示全部入口"；有缓存已按缓存显示，保持现状即可
+    if (!cached) {
+      permissionUnavailable.value = true
+    }
   }
-  permissionReady.value = true
 }
 
 async function loadCurrentUser() {
@@ -339,10 +345,6 @@ body {
   min-height: 18px;
 }
 
-.home-root.nav-permissions-loading .entrance-btn {
-  visibility: hidden;
-}
-
 .entrances {
   display: flex;
   gap: 32px;