fix(staff): 解决导出数据列数不一致问题

buhuazhen

2026-03-20 d766f11c18f7300f4d06d494782d299b4d97dd34

 src/main/java/com/ruoyi/purchase/service/IPurchaseLedgerService.java

@@ -43,4 +43,6 @@
    String getPurchaseNo();

    AjaxResult importData(MultipartFile file);

    PurchaseLedgerDto getPurchaseByCode(PurchaseLedgerDto purchaseLedgerDto);
}