DeepSeek Harness Plugin: Sidebar Folder Management

The DeepSeek Harness Web Profile sidebar plugin introduces a folder hierarchy to make it easier to find conversations as their number grows. It supports creating or renaming folders, managing conversations, searching content, and archiving sessions. The installation command is `dsh plugin --profile web add dsh-conversation-folders`. Known limitations include no access to native workspace management features, no restore entry point for archived items, and the use of bare HTTP routes. The plugin is positioned as the only implementation for manual grouping within a project and can coexist with plugins that support moving items across projects.