现代聊天工具的变化，已经不只是生成更流畅。更深的转折，是用户的第一动作从搜功能，变成说需求。过去完成查资料，常要穿过复杂菜单；现在智能入口开始把这些路径压缩成一句话。它不再只是消息窗口，而是服务前台。 新聊天入口的核心升级，是从问答型

With conversational AI entering more professional environments, their ability to protect information has become a critical measure of trust. Users may share private conversations, project data, and professional knowledge during a single interaction. A useful system must therefore do more than automate routine communication. It must also make secure