摸大红支持购物车多选一起结账

下单支持多商品行快照与一次支付；支付后整单复制文案，前台提供购物车加购与结账。

frontend/src/features/mohong/views/MobileMohongOrderDetailView.vue

@@ -127,14 +127,25 @@ async function copyText() {
         </div>
         <div>
           <h2>{{ order.product_title }}</h2>
-          <p>
+          <p v-if="!order.items?.length">
             ¥{{ order.unit_price || formatCent(order.unit_price_cent) }} × {{ order.quantity }}
             {{ order.product_unit }}
           </p>
+          <p v-else>共 {{ order.items.length }} 种 · {{ order.quantity }} 件</p>
           <strong>合计 ¥{{ order.amount || formatCent(order.amount_cent) }}</strong>
         </div>
       </section>
 
+      <section v-if="order.items?.length" class="panel">
+        <h3>商品明细</h3>
+        <div v-for="item in order.items" :key="item.product_id" class="item-row">
+          <span>{{ item.title }}</span>
+          <em
+            >×{{ item.quantity }} · ¥{{ item.amount || formatCent(item.amount_cent) }}</em
+          >
+        </div>
+      </section>
+
       <section v-if="order.copy_text" class="panel">
         <div class="copy-head">
           <h3>订单信息（发给客服）</h3>
@@ -272,6 +283,23 @@ async function copyText() {
 .product-panel strong {
   color: #ff6a00;
 }
+.item-row {
+  display: flex;
+  justify-content: space-between;
+  gap: 10px;
+  padding: 8px 0;
+  border-bottom: 1px solid #f1f5f9;
+  font-size: 13px;
+  color: #0f172a;
+}
+.item-row:last-child {
+  border-bottom: 0;
+}
+.item-row em {
+  font-style: normal;
+  color: #64748b;
+  white-space: nowrap;
+}
 .copy-head {
   display: flex;
   align-items: center;