feat(wms/coil): 新增钢卷物料个性化导出功能

1.  后端新增导出列元数据接口 `/exportColumns`，返回字段名与中文列名的映射。
2.  后端新增个性化导出接口 `/exportCustom`，支持通过 `columns` 参数指定导出的字段集合，利用增强的 `ExcelUtil.exportExcel` 方法实现按需导出。
3.  前端钢卷接收报表页面新增自定义导出弹窗，支持按列分组展示、搜索、全选/反选/清空列，并调用新接口实现仅导出选中列的数据。
4.  在导出VO中补充“班组”字段的Excel映射注解。

klp-wms/src/main/java/com/klp/controller/WmsMaterialCoilController.java

@@ -5,6 +5,9 @@ import java.math.BigDecimal;
 import java.util.List;
 import java.util.Map;
 import java.util.Arrays;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.LinkedHashMap;
 import java.util.stream.Collectors;
 import java.util.HashMap;
 
@@ -30,6 +33,7 @@ import com.klp.common.core.validate.AddGroup;
 import com.klp.common.core.validate.EditGroup;
 import com.klp.common.enums.BusinessType;
 import com.klp.common.utils.poi.ExcelUtil;
+import com.klp.common.utils.StringUtils;
 import com.klp.domain.bo.WmsMaterialCoilBo;
 import com.klp.domain.bo.WmsMaterialCoilReportSummaryBo;
 import com.klp.domain.vo.dashboard.CoilTrimStatisticsVo;
@@ -130,6 +134,70 @@ public class WmsMaterialCoilController extends BaseController {
         List<WmsMaterialCoilExportVo> list = iWmsMaterialCoilService.queryExportList(bo);
         ExcelUtil.exportExcel(list, "钢卷物料表", WmsMaterialCoilExportVo.class, response);
     }
+
+    /**
+     * 个性化导出：前端传入要导出的字段名，仅导出选中列
+     * columns 参数为逗号分隔的 Java 字段名，如 "itemTypeDesc,enterCoilNo,netWeight"
+     * 不传 columns 时等同于 /exportAll 导出全部字段
+     */
+    @Log(title = "钢卷物料表", businessType = BusinessType.EXPORT)
+    @PostMapping("/exportCustom")
+    public void exportCustom(WmsMaterialCoilBo bo,
+                             @RequestParam(required = false) String columns,
+                             HttpServletResponse response) {
+        List<WmsMaterialCoilAllExportVo> list = iWmsMaterialCoilService.queryExportListAll(bo);
+        if (StringUtils.isNotBlank(columns)) {
+            Set<String> includeFields = new HashSet<>(Arrays.asList(columns.split(",")));
+            ExcelUtil.exportExcel(list, "钢卷物料表", WmsMaterialCoilAllExportVo.class, includeFields, response);
+        } else {
+            ExcelUtil.exportExcel(list, "钢卷物料表", WmsMaterialCoilAllExportVo.class, response);
+        }
+    }
+
+    /**
+     * 获取可导出的列元数据（供前端列选择器使用）
+     * 返回 { "fieldName": "中文列名" } 的映射，基于完整导出字段
+     */
+    @GetMapping("/exportColumns")
+    public R<Map<String, String>> getExportColumns() {
+        Map<String, String> columns = new LinkedHashMap<>();
+        columns.put("itemTypeDesc", "类型");
+        columns.put("warehouseName", "逻辑库区");
+        columns.put("actualWarehouseName", "实际库区");
+        columns.put("enterCoilNo", "入场卷号");
+        columns.put("supplierCoilNo", "厂家卷号");
+        columns.put("currentCoilNo", "成品卷号");
+        columns.put("createTime", "日期");
+        columns.put("exportTime", "发货时间");
+        columns.put("exportBy", "发货人");
+        columns.put("netWeight", "重量");
+        columns.put("purpose", "用途");
+        columns.put("trimmingRequirement", "切边要求");
+        columns.put("packagingRequirement", "包装种类");
+        columns.put("qualityStatus", "产品质量");
+        columns.put("packingStatus", "原料材质");
+        columns.put("statusDesc", "库存状态");
+        columns.put("remark", "备注");
+        columns.put("itemName", "名称");
+        columns.put("length", "长度");
+        columns.put("specification", "规格");
+        columns.put("material", "材质");
+        columns.put("manufacturer", "厂家");
+        columns.put("surfaceTreatmentDesc", "表面处理");
+        columns.put("zincLayer", "锌层");
+        columns.put("itemId", "物品ID");
+        columns.put("dataTypeText", "数据类型");
+        columns.put("temperGrade", "调制度");
+        columns.put("coatingType", "镀层种类");
+        columns.put("businessPurpose", "业务用途");
+        columns.put("isRelatedToOrderText", "是否与订单相关");
+        columns.put("saleName", "销售人员");
+        columns.put("actualThickness", "实测厚度");
+        columns.put("transferType", "调拨类型");
+        columns.put("team", "班组");
+        return R.ok(columns);
+    }
+
     /**
      * 导出钢卷物料表列表（完整字段版本）
      * 导出全部字段

klp-wms/src/main/java/com/klp/domain/vo/WmsMaterialCoilAllExportVo.java

@@ -78,6 +78,7 @@ public class WmsMaterialCoilAllExportVo {
     private BigDecimal netWeight;
 
     // 班组
+    @ExcelProperty(value = "班组")
     private String team;
 
     /**