feat(order): 添加打印纸张信息到订单项

- 在 OrderItemVO 中新增 printerPaper 字段
- 根据商品类型查询并设置打印任务的纸张信息
- 优化订单详情接口返回数据结构

src/main/java/com/ycwl/basic/service/pc/impl/OrderServiceImpl.java

@@ -567,6 +567,16 @@ public class OrderServiceImpl implements OrderService {
                 log.warn("获取景区名称失败: {}", orderAppRespVO.getScenicId(), e);
             }
         }
+        if (orderAppRespVO != null && orderAppRespVO.getOrderItemList() != null && !orderAppRespVO.getOrderItemList().isEmpty()) {
+            orderAppRespVO.getOrderItemList().forEach(orderItem -> {
+                if (orderItem.getGoodsType() == 3) {
+                    PrintTaskResp printTaskResp = printerMapper.queryTaskByMpId(Math.toIntExact(orderItem.getGoodsId()));
+                    if (printTaskResp != null) {
+                        orderItem.setPrinterPaper(printTaskResp.getPaper());
+                    }
+                }
+            });
+        }
         
         return ApiResponse.success(orderAppRespVO);
     }