feat(plan): 统一计划书权限检查使用 requireLogin

- 将 checkPlanPermission 改为 requireLogin
- 更新导入：usePlanPermission → usePermission
- 计划书专属文案：请先登录后制作专属计划书

影响文件:
- src/pages/index/index.vue
- src/pages/product-center/index.vue
- src/pages/product-detail/index.vue
- src/pages/search/index.vue

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

@@ -95,7 +95,10 @@
             :tags="product.tags"
             :class="{ 'mb-[24rpx]': index < hotProducts.length - 1 }"
             @detail="goToProductDetail"
-            @plan="(productId) => checkPlanPermission(() => openPlanPopup(productId))"
+            @plan="(productId) => requireLogin(
+            () => openPlanPopup(productId),
+            { content: '请先登录后制作专属计划书', confirmText: '立即登录' }
+          )"
           />
         </view>
       </view>
@@ -173,15 +176,14 @@ import { listAPI } from '@/api/get_product';
 import { weekHotAPI } from '@/api/file';
 import { homeIconAPI } from '@/api/home';
 import { usePlanSubmit } from '@/composables/usePlanSubmit';
-import { usePlanPermission } from '@/composables/usePlanPermission';
+import { usePermission } from '@/composables/usePermission';
 
+// 初始化权限检查
+const { requireLogin } = usePermission()
 
 // User Store
 const userStore = useUserStore();
 
-// 获取权限检查方法
-const { checkPlanPermission } = usePlanPermission();
-
 // Header Image Error State
 /**
  * 头部图片加载失败状态
@@ -445,10 +447,10 @@ const handleGridNav = (item) => {
 
   // 特殊处理：计划书页面需要登录权限
   if (item.route === '/pages/plan/index') {
-    checkPlanPermission(navigate, {
-      content: '计划书功能需要登录后才能使用，是否立即登录？',
-      confirmText: '去登录'
-    });
+    requireLogin(
+      () => navigate(),
+      { content: '请先登录后查看专属计划书', confirmText: '立即登录' }
+    );
   } else {
     // 其他页面直接导航
     navigate();

@@ -151,7 +151,11 @@ import PlanFormContainer from '@/components/plan/PlanFormContainer.vue'
 import { listAPI } from '@/api/get_product'
 import { mockProductListAPI } from '@/utils/mockData'
 import { usePlanSubmit } from '@/composables/usePlanSubmit'
-import { usePlanPermission } from '@/composables/usePlanPermission'
+import { usePermission } from '@/composables/usePermission'
+
+// 初始化权限检查
+const { requireLogin } = usePermission()
+
 import { USE_MOCK_DATA } from '@/config/app'
 // ⚠️ MOCK 数据开关 - 统一从 @/config/app 导入
 
@@ -160,9 +164,6 @@ const go = useGo()
 // User Store
 const userStore = useUserStore()
 
-// 获取权限检查方法
-const { checkPlanPermission } = usePlanPermission()
-
 /**
  * 当前列表数据
  * @type {Ref<Array<any>>}
@@ -502,11 +503,14 @@ const { handleClick: handleProductClick } = useListItemClick({
  */
 const openPlanPopup = (product) => {
   console.log('[Product Center] 点击制作计划书，当前登录状态:', userStore.isLoggedIn)
-  checkPlanPermission(() => {
+  requireLogin(
+    () => {
       console.log('[Product Center] 权限检查通过，打开计划书弹窗')
       selectedProduct.value = product
       showPlanPopup.value = true
-  })
+    },
+    { content: '请先登录后制作专属计划书', confirmText: '立即登录' }
+  )
 }
 
 // 使用 composable 统一处理计划书提交后逻辑

@@ -104,7 +104,10 @@
       <nut-button
         color="#2563EB"
         class="!w-full !h-[88rpx] !rounded-[16rpx] !text-[28rpx] !font-bold"
-        @tap="() => checkPlanPermission(() => openPlanPopup())"
+        @tap="() => requireLogin(
+          () => openPlanPopup(),
+          { content: '请先登录后制作专属计划书', confirmText: '立即登录' }
+        )"
       >
         制作计划书
       </nut-button>
@@ -134,7 +137,10 @@ import Taro, { useLoad } from '@tarojs/taro'
 import { getDocumentIcon, getDocumentLabel } from '@/utils/documentIcons'
 import { detailAPI } from '@/api/get_product'
 import { usePlanSubmit } from '@/composables/usePlanSubmit'
-import { usePlanPermission } from '@/composables/usePlanPermission'
+import { usePermission } from '@/composables/usePermission'
+
+// 初始化权限检查
+const { requireLogin } = usePermission()
 
 const { viewFile } = useFileOperation()
 
@@ -214,7 +220,6 @@ const viewDocument = (doc) => {
  *
  * @description 检查登录权限后，打开当前产品的计划书表单
  */
-const { checkPlanPermission } = usePlanPermission()
 
 const openPlanPopup = () => {
     showPlanPopup.value = true

@@ -74,7 +74,10 @@
           :tags="item.tags || []"
           class="search-result-item"
           @detail="goToProductDetail"
-          @plan="(productId) => checkPlanPermission(() => openPlanPopup(productId))"
+          @plan="(productId) => requireLogin(
+            () => openPlanPopup(productId),
+            { content: '请先登录后制作专属计划书', confirmText: '立即登录' }
+          )"
         />
 
         <!-- File Results -->
@@ -140,7 +143,6 @@ import { mockSearchAPI } from '@/utils/mockData'
 import { USE_MOCK_DATA } from '@/config/app'
 import { usePlanSubmit } from '@/composables/usePlanSubmit'
 import { usePermission } from '@/composables/usePermission'
-import { usePlanPermission } from '@/composables/usePlanPermission'
 
 // ⚠️ MOCK 数据开关 - 统一从 @/config/app 导入
 
@@ -165,9 +167,6 @@ onMounted(() => {
   )
 })
 
-// 获取权限检查方法
-const { checkPlanPermission } = usePlanPermission()
-
 /**
  * 搜索页面状态管理
  * @description 支持双类型（产品/资料）搜索，自动切换分类