feat(admin): 新增后台商品管理与审核视图

frontend/src/app/AppRouter.tsx

@@ -68,6 +68,11 @@ const AdminOrdersPage = lazy(() =>
     default: module.AdminOrdersPage,
   }))
 )
+const AdminListingsPage = lazy(() =>
+  import('@/features/admin/AdminListingsPage').then(module => ({
+    default: module.AdminListingsPage,
+  }))
+)
 const AdminLayout = lazy(() =>
   import('@/layouts/AdminLayout').then(module => ({ default: module.AdminLayout }))
 )
@@ -78,8 +83,6 @@ const AdminSectionPlaceholder = lazy(() =>
 const adminSections: Array<{ path: string; title: string; description: string }> = [
   { path: 'orders/refund-review', title: '退款审核', description: '审核退款申请并核对资金影响。' },
   { path: 'disputes', title: '申诉仲裁', description: '处理订单争议、证据与仲裁结果。' },
-  { path: 'listings', title: '商品管理', description: '查看商品、账号资产与上下架状态。' },
-  { path: 'listings/review', title: '商品审核', description: '审核待上架商品与账号截图。' },
   { path: 'users', title: '用户管理', description: '查看用户、实名状态与交易记录。' },
   { path: 'finance', title: '财务看板', description: '查看收入、退款、结算与资金趋势。' },
   { path: 'withdrawals', title: '提现审核', description: '审核提现申请与打款确认。' },
@@ -119,6 +122,8 @@ export function AppRouter() {
           <Route element={<AdminLayout />}>
             <Route index element={<AdminDashboardPage />} />
             <Route path="orders" element={<AdminOrdersPage />} />
+            <Route path="listings" element={<AdminListingsPage />} />
+            <Route path="listings/review" element={<AdminListingsPage mode="review" />} />
             {adminSections.map(section => (
               <Route
                 key={section.path}