feat: 添加品牌管理页面

frontend/src/layouts/AdminLayout.vue

@@ -25,6 +25,10 @@
           <el-icon><Folder /></el-icon>
           <span class="nav-text">{{ $t('admin.categoryManagement') }}</span>
         </router-link>
+        <router-link to="/admin/brands" class="nav-link">
+          <el-icon><Stamp /></el-icon>
+          <span class="nav-text">{{ $t('admin.brandManagement') }}</span>
+        </router-link>
         <router-link to="/admin/products" class="nav-link">
           <el-icon><Goods /></el-icon>
           <span class="nav-text">{{ $t('admin.productManagement') }}</span>
@@ -152,7 +156,7 @@
 import { ref, computed } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import { useI18n } from 'vue-i18n'
-import { DataAnalysis, User, Folder, Goods, List, Van, Trophy, ChatDotSquare, Setting, Document, Picture, Compass, Fold, Expand, HomeFilled, FullScreen, ArrowDown, SwitchButton, ArrowRight } from '@element-plus/icons-vue'
+import { DataAnalysis, User, Folder, Stamp, Goods, List, Van, Trophy, ChatDotSquare, Setting, Document, Picture, Compass, Fold, Expand, HomeFilled, FullScreen, ArrowDown, SwitchButton, ArrowRight } from '@element-plus/icons-vue'
 import { useUserStore } from '../store/user'
 import { useCartStore } from '../store/cart'
 
@@ -170,6 +174,7 @@ const pageTitles: Record<string, string> = {
   '/admin': '控制台',
   '/admin/users': '用户管理',
   '/admin/categories': '分类管理',
+  '/admin/brands': '品牌管理',
   '/admin/products': '商品管理',
   '/admin/orders': '订单管理',
   '/admin/suppliers': '供应商管理',