feat(router): 添加商品详情和商品管理路由

- 在 App.vue 中添加商品详情和商品管理菜单项
- 配置商品详情页路由，支持动态参数 id
- 添加创建订单页面的新路由路径 /create-order
- 引入并配置商品管理页面路由 /manage/product
- 更新首页路由指向商品详情组件
- 动态导入商品管理组件以优化性能

src/App.vue

@@ -2,14 +2,16 @@
   <el-container>
     <el-header>
       <div class="header-content">
-        <h1>MT Pay - PingPong支付系统</h1>
+        <h1>MT Pay</h1>
         <el-menu
           mode="horizontal"
           :default-active="activeIndex"
           router
         >
-          <el-menu-item index="/">创建订单</el-menu-item>
+          <el-menu-item index="/">商品详情</el-menu-item>
+          <el-menu-item index="/create-order">创建订单</el-menu-item>
           <el-menu-item index="/query">订单查询</el-menu-item>
+          <el-menu-item index="/manage/product">商品管理</el-menu-item>
         </el-menu>
       </div>
     </el-header>

src/router/index.js

@@ -3,10 +3,21 @@ import CreateOrder from '../views/CreateOrder.vue'
 import Checkout from '../views/Checkout.vue'
 import PaymentResult from '../views/PaymentResult.vue'
 import OrderQuery from '../views/OrderQuery.vue'
+import ProductDetail from '../views/ProductDetail.vue'
 
 const routes = [
   {
     path: '/',
+    name: 'Home',
+    component: ProductDetail
+  },
+  {
+    path: '/product/:id',
+    name: 'ProductDetail',
+    component: ProductDetail
+  },
+  {
+    path: '/create-order',
     name: 'CreateOrder',
     component: CreateOrder
   },
@@ -24,6 +35,11 @@ const routes = [
     path: '/query',
     name: 'OrderQuery',
     component: OrderQuery
+  },
+  {
+    path: '/manage/product',
+    name: 'ProductManage',
+    component: () => import('../views/ProductManage.vue')
   }
 ]