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DSH Web 插件：最后一个未归档会话被归档的瞬间自动隐藏该工作区行，另在工作区行「…」菜单里追加「隐藏工作区」并配官方 Modal 恢复入口；只切 display，不归档、不删除、不改写任何工作区注册与会话数据。

Show or hide workspaces in the DSH sidebar from Settings: hidden ones sink to the bottom and their sessions are archived instead of spilling into the ungrouped list. Local-only, reversible, nothing deleted.

DeepSeek Harness plugin: hide a whole workspace from the sidebar and bring it back with one view option — the workspace, its sessions and its registration stay untouched.