AI聊天系统的变化，已经不只是回答更快。关键的转折，是用户的操作入口从翻页面，变成直接下指令。过去完成订票，常要穿过复杂菜单；现在智能入口开始把这些路径折叠成一次对话。它不再只是问答框，而是任务入口。 这类工具的核心升级，是从内容助手走�

As smart dialogue systems handle increasingly important tasks, their ability to protect information has become an essential condition for adoption. Users may share business plans, personal questions, and internal documents during a single interaction. A useful system must therefore do more than a