refactor(wms): 修改钢卷合卷功能返回结果卷

- 将IWmsMaterialCoilService.mergeCoils方法返回值从Boolean改为Long
- 更新WmsMaterialCoilController.mergeCoils方法以返回合卷后的新钢卷ID
- 修改WmsMaterialCoilServiceImpl.mergeCoils实现以返回合并后的钢卷ID
- 移除原有的布尔返回值，改为返回实际的业务数据ID
- 保持事务处理和业务逻辑完整性

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

@@ -2899,7 +2899,7 @@ public class WmsMaterialCoilServiceImpl implements IWmsMaterialCoilService {
      */
     @Override
     @Transactional(rollbackFor = Exception.class)
-    public Boolean mergeCoils(WmsMaterialCoilBo bo) {
+    public Long mergeCoils(WmsMaterialCoilBo bo) {
         if (bo.getNewCoils() == null || bo.getNewCoils().isEmpty()) {
             throw new RuntimeException("合卷操作需要提供参与合卷的钢卷列表");
         }
@@ -2980,7 +2980,7 @@ public class WmsMaterialCoilServiceImpl implements IWmsMaterialCoilService {
             coilPendingActionService.updateByBo(pendingActionBo);
         }
 
-        return true;
+        return mergedCoilId;
     }
 
     /**