AI聊天系统的变化，已经不再停留在回答更快。真正的转折，是用户的操作入口从翻页面，变成讲目标。过去完成订票，常要穿过复杂菜单；现在对话框开始把这些路径折叠成一次对话。它不再只是内容工具，而是服务前台。 这种产品的核心升级，是从问答型AI走�

As smart dialogue systems handle increasingly important tasks, their ability to protect information has become a major operational concern. Users may share customer records, workplace messages, and research material during a single interaction. A useful system must therefore do more than produce fluent answers. It must also limit unauthorized acces