fix(shopOrder): 默认tab改为全部，订单详情页增支付凭证图

- 将 shopOrder 选项卡默认值从 'undelivered' 改为 'all'，确保首页展示全部订单数据
- 修正初次加载时因缺少 statusFilter 导致数据不符的问题
- 订单详情页新增“支付凭证”显示，支持线下付款上传凭证图片预览
- 引入确保完整URL显示的工具函数 ensureFullUrl，配合压缩图像展示
- form reactive 新增 paymentVoucher 字段，符合 ShopOrder 模型定义
- 仅线下付款订单显示该凭证图，条件渲染自然处理

src/views/shop/shopOrder/components/orderInfo.vue

@@ -202,6 +202,19 @@
             </template>
           </a-tooltip>
         </a-descriptions-item>
+        <a-descriptions-item
+          v-if="form.paymentVoucher"
+          label="支付凭证"
+          :span="3"
+          :labelStyle="{ width: '90px', color: '#808080' }"
+        >
+          <a-image
+            :width="120"
+            :src="getCompressedImageUrl(form.paymentVoucher, { width: 750 })"
+            :preview-src-list="[ensureFullUrl(form.paymentVoucher)]"
+            style="cursor: pointer"
+          />
+        </a-descriptions-item>
         <a-descriptions-item
           label="开票状态"
           :labelStyle="{ width: '90px', color: '#808080' }"
@@ -425,7 +438,7 @@
   import { updateShopOrder, removeShopOrder, refundShopOrder } from '@/api/shop/shopOrder';
   import { message, Modal } from 'ant-design-vue';
   import DeliveryModal from './deliveryModal.vue';
-  import {getCompressedImageUrl} from "@/utils/image";
+  import {getCompressedImageUrl, ensureFullUrl} from "@/utils/image";
 
   const useForm = Form.useForm;
 
@@ -593,6 +606,8 @@
     invoiceNo: undefined,
     // 支付时间
     payTime: undefined,
+    // 线下收款支付凭证（图片地址，确认线下收款时上传）
+    paymentVoucher: undefined,
     // 退款时间
     refundTime: undefined,
     // 申请退款时间

src/views/shop/shopOrder/index.vue

@@ -443,7 +443,7 @@
   const validTabs = ['all', 'unpaid', 'undelivered', 'unreceived', 'completed', 'refunded', 'cancelled'];
   const tabFromQuery = route.query.tab as string;
   const activeKey = ref<string>(
-    validTabs.includes(tabFromQuery) ? tabFromQuery : 'undelivered'
+    validTabs.includes(tabFromQuery) ? tabFromQuery : 'all'
   );
 
   // ============ 新订单提醒 ============