feat(wms): 添加物料卷统计总数功能

- 在WmsMaterialCoilServiceImpl中新增total_count字段统计
- 将统计结果添加到返回结果集中
- 处理空值情况并设置默认值为BigDecimal.ZERO

klp-wms/src/main/java/com/klp/service/impl/WmsMaterialCoilServiceImpl.java

@@ -404,6 +404,8 @@ public class WmsMaterialCoilServiceImpl implements IWmsMaterialCoilService {
             if (stats != null) {
                 Object grossWeight = stats.get("total_gross_weight");
                 Object netWeight = stats.get("total_net_weight");
+                Object count = stats.get("total_count");
+                result.put("total_count", count != null ? new BigDecimal(count.toString()) : BigDecimal.ZERO);
                 result.put("total_gross_weight", grossWeight != null ? new BigDecimal(grossWeight.toString()) : BigDecimal.ZERO);
                 result.put("total_net_weight", netWeight != null ? new BigDecimal(netWeight.toString()) : BigDecimal.ZERO);
             }