Manage and monitor a personal stock watchlist with support for adding, removing, listing stocks, and summarizing their recent performance using data from 10jqka.com.cn. Use when the user wants to track specific stocks, get performance summaries, or manage their watchlist.

使用来自10jqka.com.cn的数据，管理并监控个人股票自选列表，支持添加、删除、列出股票，并汇总其近期表现。适用于用户希望跟踪特定股票、获取表现摘要或管理自选列表的场景。