平台原始字段（来自 API 响应或 CSV 导入）：
{
"add_time": "2024-04-23 15:14:58",
"barcode": "",
"biz_type": 1,
"cates": [
{
"cate_id": 151452250,
"cate_name": "“你好，漫农”生食蛋",
"sort_num": 12
}
],
"chain_store_sync": false,
"cost_price": "",
"fx": 0,
"fx_fee_rate": "0.0",
"h5Url": "https://weidian.com/item.html?itemID=7235292001",
"imgs": [
"https://si.geilicdn.com/pcitem1790250396-35930000018f09ba32c90a2102c5_2448_2448.jpg?w=480&h=480&cp=1"
],
"istop": 0,
"item_desc": "【漫农甄选】快乐的蛋无菌鸡蛋非笼养可生食无抗生素新鲜鸡蛋婴幼儿推荐鸡蛋宇航员食品级别30枚",
"item_name": "【漫农甄选】快乐的蛋无菌鸡蛋非笼养可生食无抗生素新鲜鸡蛋婴幼儿推荐鸡蛋宇航员食品级别30枚",
"item_simple_name": "无抗生素无菌可生食鸡蛋",
"itemid": "7235292001",
"merchant_code": "",
"price": "108.00",
"self_create": true,
"seller_id": "1867168977",
"skus": [],
"sold": 0,
"status": 2,
"stock": 94,
"thumb_imgs": [
"https://si.geilicdn.com/pcitem1790250396-35930000018f09ba32c90a2102c5_2448_2448.jpg?w=110&h=110&cp=1"
],
"tiaohuo_item": false,
"update_time": "2025-04-09 11:00:53"
}