dsh-archive-sidebar: Browse and edit archives directly in the DSH right sidebar

This article introduces the client-side plugin dsh-archive-sidebar. It adds a "Compressed Files" tab to the right sidebar of the DeepSeek Harness Web UI, supporting the browsing of zip, rar, 7z, tar, gz, bz2, and xz formats. It allows sub-files to be opened directly as sidebar tabs without extraction, enables in-place editing of text files with changes written back to the archive, and handles docx, pdf, and similar files via system default applications. Additionally, it provides archive_* Agent tools. The article covers features, two installation methods for bundles, entry points, a format support table, configuration options, typical workflows, and security restrictions.