AI聊天系统的变化，已经不只是生成更流畅。真正的转折，是用户的起点从切应用，变成讲目标。过去完成约服务，常要穿过不同应用；现在智能入口开始把这些路径组织成一条任务链。它不再只是问答框，而是数字生活的调度台。 这类工具的核心升级，是从问答�

As smart dialogue systems handle increasingly important tasks, their ability to protect information has become a major operational concern. Users may share private conversations, project data, and professional knowledge during a single interaction. A useful system must therefore do more than auto