Convert merchant-provided product spreadsheets (Excel/CSV/pasted tables/screenshot text) into a Kiwi workbench import-ready CSV with confirmed column mapping and an honest issue list; the merchant uploads and confirms in the workbench themselves. Use for 整理商品、商品表格导入、Excel 转 Kiwi 商品表、批量上架准备；不用于代商家上传、确认导入或修改商品。
