hulai-website/middleware/admin.js

export default defineNuxtRouteMiddleware((to) => {
  if (import.meta.server) return
  if (to.path === '/admin/login') return

  // 先从 localStorage 恢复（确保 useState 也同步）
  const stored = localStorage.getItem('admin_token')
  if (!stored) {
    return navigateTo('/admin/login')
  }

  // 同步到 useState，保证 composable 拿到值
  const token = useState('admin_token')
  if (!token.value) {
    token.value = stored
  }
})