新增开发 Mock 后台菜单与造单能力

非生产环境在后台提供 lewan/feifei 领取造单与 91 查单模拟，CLI 复用同一服务，避免依赖真实平台联调。

apps/frontend/src/layouts/AdminLayout.tsx

@@ -1,5 +1,6 @@
 import {
   AuditOutlined,
+  BugOutlined,
   DashboardOutlined,
   FileSearchOutlined,
   LogoutOutlined,
@@ -15,10 +16,11 @@ import {
 } from '@ant-design/icons'
 import { App, Button, Dropdown, Layout, Menu, Space, Typography } from 'antd'
 import type { MenuProps } from 'antd'
+import { useQuery } from '@tanstack/react-query'
 import { useMemo, useState } from 'react'
 import { Outlet, useLocation, useNavigate } from 'react-router'
 
-import { logoutAdmin } from '@/services/admin'
+import { fetchDevMockStatus, logoutAdmin } from '@/services/admin'
 import {
   clearAdminSession,
   getAdminRole,
@@ -40,6 +42,14 @@ export default function AdminLayout() {
   const username = getAdminUsername() || 'admin'
   const expiresAt = getAdminTokenExpiresAt()
 
+  const devMockStatusQuery = useQuery({
+    queryKey: ['admin-dev-mock-status'],
+    queryFn: () => fetchDevMockStatus(),
+    staleTime: 60_000,
+    retry: false,
+  })
+  const devMockEnabled = Boolean(devMockStatusQuery.data?.data?.enabled)
+
   const menuItems = useMemo<MenuProps['items']>(() => {
     const operationItems: MenuProps['items'] = [
       { key: '/admin/dashboard', icon: <DashboardOutlined />, label: '概览' },
@@ -58,6 +68,17 @@ export default function AdminLayout() {
       },
     ]
 
+    if (devMockEnabled) {
+      items.push({
+        key: 'group-dev',
+        type: 'group',
+        label: '开发',
+        children: [
+          { key: '/admin/dev-mock', icon: <BugOutlined />, label: '开发 Mock' },
+        ],
+      })
+    }
+
     if (role === 'admin') {
       items.push(
         {
@@ -80,7 +101,7 @@ export default function AdminLayout() {
     }
 
     return items
-  }, [role])
+  }, [devMockEnabled, role])
 
   async function submitLogout() {
     try {