fix(export): 修复检验项目导出时物料类别字段显示问题

- 将导出DTO中的materialTypeId字段改为materialTypeCode字符串类型
- 更新Excel列标题从"物料类别ID*"为"物料类别*"
- 在导出服务中通过关联查询获取物料类别编码并设置到导出对象
- 修复详情流处理中的物料类别赋值逻辑
- 清理VO转换中的多余空行代码格式化

nflg-wms-common/src/main/java/com/nflg/wms/common/pojo/dto/QmsInspectionItemExportDTO.java

@@ -11,10 +11,10 @@ import org.ttzero.excel.annotation.MediaColumn;
 public class QmsInspectionItemExportDTO {
 
     /**
-     * 物料类别ID
+     * 物料类别
      */
-    @ExcelColumn("物料类别ID*")
-    private Long materialTypeId;
+    @ExcelColumn("物料类别*")
+    private String materialTypeCode;
 
     /**
      * 检测类型：0=定向，1=定量

nflg-wms-repository/src/main/java/com/nflg/wms/repository/service/impl/QmsInspectionItemServiceImpl.java

@@ -247,12 +247,20 @@ public class QmsInspectionItemServiceImpl extends ServiceImpl<QmsInspectionItemM
         }
         List<QmsInspectionItem> items = query.orderByAsc(QmsInspectionItem::getCreateTime).list();
 
+        List<QmsQcMaterialCategory> categories= materialCategoryService.lambdaQuery()
+                .in(QmsQcMaterialCategory::getId, items.stream().map(QmsInspectionItem::getMaterialTypeId).collect(Collectors.toList()))
+                .list();
+
         // 按主表记录展开到明细行（一行一条明细，无明细也输出主表行）
         return items.stream().flatMap(item -> {
             List<QmsInspectionItemDetails> details = detailsService.listByItemId(item.getId());
+            QmsQcMaterialCategory category=categories.stream()
+                    .filter(c -> c.getId().equals(item.getMaterialTypeId()))
+                    .findFirst()
+                    .get();
             if (details.isEmpty()) {
                 QmsInspectionItemExportDTO dto = new QmsInspectionItemExportDTO();
-                dto.setMaterialTypeId(item.getMaterialTypeId());
+                dto.setMaterialTypeCode(category.getCategoryCode());
                 dto.setDetectionType(item.getDetectionType());
                 dto.setInspectionItemName(item.getInspectionItemName());
                 dto.setInspectionNo(item.getInspectionNo());
@@ -260,7 +268,7 @@ public class QmsInspectionItemServiceImpl extends ServiceImpl<QmsInspectionItemM
             }
             return details.stream().map(d -> {
                 QmsInspectionItemExportDTO dto = new QmsInspectionItemExportDTO();
-                dto.setMaterialTypeId(item.getMaterialTypeId());
+                dto.setMaterialTypeCode(category.getCategoryCode());
                 dto.setDetectionType(item.getDetectionType());
                 dto.setInspectionItemName(item.getInspectionItemName());
                 dto.setInspectionNo(item.getInspectionNo());