DeepSeek Harness Plugin: dsh-plugin-source

`dsh-plugin-source` is a plugin enhancement tool for DeepSeek Harness (DSH), designed to address the limitations of the official plugin list interface in distinguishing plugin sources and displaying version information. By parsing local data, the plugin groups plugins by source (official/community/local) and displays version numbers, repository links, and development indicators. It is released under the MIT license, supports installation from npm, GitHub, or local paths, and remains fully compatible with the native search and detail features.