AI对话跨设备归档同步

原帖标题：[localstorage] Archived conversations are stored in localStorage — migrate to conversation tags in agent-server

Archived conversations are tracked only in browser localStorage, so archiving a conversation on one device has no effect anywhere else — the conversation reappears un-archived on every other device, d…

已归档的对话仅在浏览器 localStorage 中跟踪,因此在一个设备上归档对话在其他设备上没有任何效果,该对话在每个其他设备上都重新显示为未归档状态,这违背了归档的意义。

原帖标题：[localstorage] Pinned conversations are stored in localStorage — migrate to conversation tags in agent-server

The list of pinned conversations is stored only in browser localStorage, so pins don't follow the user across devices (or even across browsers/profiles on the same machine). Clearing site data silentl…

固定对话列表仅存储在浏览器 localStorage 中,因此固定状态不会跨设备(甚至同一台机器上的不同浏览器/配置文件)跟随用户。清除站点数据会静默丢失所有固定。