平台原始字段（来自 API 响应或 CSV 导入）：
{
"add_time": "2024-06-13 18:36:17",
"barcode": "",
"biz_type": 1,
"cates": [
{
"cate_id": 151452254,
"cate_name": "健康优加",
"sort_num": 5
}
],
"chain_store_sync": false,
"cost_price": "",
"fx": 0,
"fx_fee_rate": "0.0",
"h5Url": "https://weidian.com/item.html?itemID=7244099578",
"imgs": [
"https://si.geilicdn.com/pcitem1790250396-10b5000001901126ead00a239846_4599_4599.jpg?w=480&h=480&cp=1"
],
"istop": 0,
"item_desc": "【健康优加】漫香1号新鲜大米新米绿色软糯香弹真空包装",
"item_name": "【健康优加】漫香1号新鲜大米新米绿色软糯香弹真空包装",
"itemid": "7244099578",
"merchant_code": "",
"price": "13.60",
"self_create": true,
"seller_id": "1867168977",
"skus": [],
"sold": 1,
"status": 2,
"stock": 499,
"thumb_imgs": [
"https://si.geilicdn.com/pcitem1790250396-10b5000001901126ead00a239846_4599_4599.jpg?w=110&h=110&cp=1"
],
"tiaohuo_item": false,
"update_time": "2025-08-08 11:57:35"
}