feat: KOC 资源导入后自动爬取主页资料并调用 LLM 打标签

- 新增 structured_text_process 打标客户端（文本构造、标签解析清洗、MCP 调用）
- 写库后后台打标（tagUntaggedAccounts），单条新增 / 批量导入 / 每日补全三个入口统一
- 标签只补空，UPDATE 带 tags 为空守卫，不覆盖已有标签
- 新增 AI_TAGGING_TOOL 配置项（留空关闭），更新配置示例与文档
- 新增 16 个打标测试用例，全量 131 个测试通过

examples/koc-resources-sample.jsonl

@@ -0,0 +1,8 @@
+{"profileUrl": "https://www.xiaohongshu.com/user/profile/5ff0e6410000000001008401", "nickname": "小红薯爱分享", "publicAccountId": "xhs_88012345", "ipLocation": "上海", "followers": "1.2万", "gender": "女", "bio": "爱美食爱生活的上海小姐姐，合作私信~", "tags": "美食,探店,生活方式", "cooperationSource": "媒介推荐"}
+{"profileUrl": "https://www.xiaohongshu.com/user/profile/5ff0e6410000000001008402", "nickname": "阿杰的穿搭日记", "publicAccountId": "xhs_7712ab", "ipLocation": "广东", "followers": "8600", "gender": "男", "bio": "男生穿搭 | 平价好物 | 每周更新", "tags": "穿搭,男装,平价好物", "cooperationSource": "历史合作"}
+{"profileUrl": "https://www.xiaohongshu.com/user/profile/5ff0e6410000000001008403", "nickname": "琳琳妈妈育儿记", "publicAccountId": "xhs_6633cd", "ipLocation": "浙江", "followers": "3.5万", "gender": "女", "bio": "二胎妈妈，分享育儿干货和母婴好物", "tags": "母婴,育儿,好物分享", "cooperationSource": "蒲公英"}
+{"profileUrl": "https://www.xiaohongshu.com/user/profile/5ff0e6410000000001008404", "nickname": "健身教练大凯", "publicAccountId": "xhs_5544ef", "ipLocation": "北京", "followers": "10万+", "gender": "男", "bio": "NSCA认证教练，运动补剂科普", "tags": "健身,运动,补剂", "cooperationSource": "自荐"}
+{"profileUrl": "https://www.xiaohongshu.com/user/profile/5ff0e6410000000001008405", "nickname": "甜品研究社", "publicAccountId": "xhs_4455gh", "ipLocation": "四川", "followers": "2.1万", "gender": "女", "bio": "烘焙教程 | 甜品测评 | 成都探店", "tags": "烘焙,甜品,探店", "cooperationSource": "媒介推荐"}
+{"profileUrl": "https://www.douyin.com/user/ms4y9x873kq1", "nickname": "数码测评君", "publicAccountId": "dy_3321ij", "ipLocation": "江苏", "followers": "5.8万", "gender": "男", "bio": "手机数码深度测评，避坑指南", "tags": "数码,测评,科技", "cooperationSource": "星图"}
+{"profileUrl": "https://www.xiaohongshu.com/user/profile/5ff0e6410000000001008407", "nickname": "旅行摄影的小舟", "publicAccountId": "xhs_2266mn", "ipLocation": "云南", "followers": "6400", "gender": "女", "bio": "风光摄影 | 旅行vlog | 云南旅拍", "tags": "旅行,摄影", "cooperationSource": "历史合作"}
+{"profileUrl": "https://www.xiaohongshu.com/user/profile/5ff0e6410000000001008408", "nickname": "美妆小课堂Amy", "publicAccountId": "xhs_1177op", "ipLocation": "上海", "followers": "15万", "gender": "女", "bio": "化妆品成分党，专注国货美妆测评", "tags": "美妆,护肤,国货", "cooperationSource": "蒲公英"}