feat(order): 支持线下付款先发货后结款流程

- 后端移除确认收款时订单状态限制，已发货订单确认收款后自动完成订单
- 管理后台订单列表和操作按钮区分线下付款未付款不同发货状态
- 离线付款弹窗新增发货状态字段及提示文案动态展示
- 订单详情支付状态标签区分已发货待收款状态，更新步骤条显示逻辑
- 小程序端订单状态文本和操作按钮支持线下付款先发货后结款场景

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

@@ -13,7 +13,7 @@
     <a-alert
       type="info"
       show-icon
-      message="确认已收到该订单的线下付款（微信转账/银行汇款等），确认后订单将进入待发货状态。"
+      :message="alertMessage"
       style="margin-bottom: 16px"
     />
 
@@ -73,7 +73,7 @@
 </template>
 
 <script lang="ts" setup>
-  import { ref, reactive, watch } from 'vue';
+  import { ref, reactive, watch, computed } from 'vue';
   import { Form, message } from 'ant-design-vue';
   import { PlusOutlined } from '@ant-design/icons-vue';
   import type { UploadFile, UploadProps } from 'ant-design-vue';
@@ -99,16 +99,25 @@
     orderId: undefined as number | undefined,
     orderNo: '' as string,
     paymentVoucher: '' as string,
-    remarks: '' as string
+    remarks: '' as string,
+    deliveryStatus: undefined as number | undefined
   });
 
   // 表单验证规则
   const rules = {
     paymentVoucher: [
-      { required: true, message: '请上传支付凭证' }
+      { required: false, message: '请上传支付凭证' }
     ]
   };
 
+  // 根据发货状态显示不同的提示文案
+  const alertMessage = computed(() => {
+    if (form.deliveryStatus === 20) {
+      return '该订单已发货，确认收到线下付款（微信转账/银行汇款等）后，订单将自动完成。';
+    }
+    return '确认已收到该订单的线下付款（微信转账/银行汇款等），确认后订单将进入待发货状态。';
+  });
+
   const formRef = ref();
   const { resetFields, validate } = useForm(form, rules);
 
@@ -197,7 +206,7 @@
         form.remarks || undefined,
         form.paymentVoucher || undefined
       );
-      message.success('确认收款成功，订单已进入待发货状态');
+      message.success(form.deliveryStatus === 20 ? '确认收款成功，订单已自动完成' : '确认收款成功，订单已进入待发货状态');
       emit('done');
       updateVisible(false);
     } catch (error: any) {
@@ -218,6 +227,7 @@
         form.orderNo = props.data?.orderNo || '';
         form.paymentVoucher = '';
         form.remarks = '';
+        form.deliveryStatus = props.data?.deliveryStatus;
         fileList.value = [];
       } else {
         resetFields();

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

@@ -74,7 +74,8 @@
           <a-tag v-if="form.payStatus == 1 && form.payType !== 8 && form.payType !== 9" color="green">已付款</a-tag>
           <a-tag v-if="form.payStatus == 1 && form.payType === 8" color="blue">待收货付款</a-tag>
           <a-tag v-if="form.payStatus == 1 && form.payType === 9" color="green">已确认收款</a-tag>
-          <a-tag v-if="form.payStatus == 0 && form.payType === 9" color="orange">待确认收款</a-tag>
+          <a-tag v-if="form.payStatus == 0 && form.payType === 9 && form.deliveryStatus === 20" color="blue">已发货待收款</a-tag>
+          <a-tag v-if="form.payStatus == 0 && form.payType === 9 && form.deliveryStatus !== 20" color="orange">待确认收款</a-tag>
           <a-tag v-if="form.payStatus == 0 && form.payType !== 9">未付款</a-tag>
           <a-tag v-if="form.payStatus == 3">未付款,占场中</a-tag>
         </a-descriptions-item>
@@ -754,7 +755,21 @@
       ];
     } else if (order.payStatus === 0) {
       // 未付款
-      active.value = 0;
+      // 线下付款先发货后结款：已发货时步骤条显示发货状态
+      if (order.payType === 9 && order.deliveryStatus === 20) {
+        active.value = 2;
+        steps.value[1].description = '待收款';
+        steps.value[2].description = order.deliveryTime
+          ? toDateString(order.deliveryTime, 'MM-dd HH:mm')
+          : '已发货';
+        if (order.orderStatus === 1) {
+          active.value = 4;
+          steps.value[3].description = '已收货';
+          steps.value[4].description = '订单完成';
+        }
+      } else {
+        active.value = 0;
+      }
     } else if (order.payStatus === 1) {
       // 已付款
       active.value = 1;

src/views/shop/shopOrder/index.vue

@@ -263,16 +263,26 @@
                 </a>
               </template>
 
-              <!-- 线下付款·待确认收款状态的操作 -->
-              <template v-if="!record.payStatus && record.orderStatus === 0 && record.payType === 9">
+              <!-- 线下付款·待确认收款状态的操作（支持先发货后结款） -->
+              <template v-if="!record.payStatus && record.orderStatus === 0 && record.payType === 9 && record.deliveryStatus === 10">
                 <a @click.stop="handleConfirmOfflinePayment(record)" class="ele-text-success">
                   <CheckCircleOutlined /> 确认收款
                 </a>
+                <a @click.stop="handleDelivery(record)" class="ele-text-primary">
+                  <SendOutlined /> 发货
+                </a>
                 <a @click.stop="handleCancelOrder(record)">
                   <span class="ele-text-warning"> <CloseOutlined /> 关闭 </span>
                 </a>
               </template>
 
+              <!-- 线下付款·已发货未收款状态的操作（先发货后结款） -->
+              <template v-if="!record.payStatus && record.orderStatus === 0 && record.payType === 9 && record.deliveryStatus === 20">
+                <a @click.stop="handleConfirmOfflinePayment(record)" class="ele-text-success">
+                  <CheckCircleOutlined /> 确认收款
+                </a>
+              </template>
+
               <!-- 已付款未发货状态的操作 -->
               <template
                 v-if="