dsh-git: Session-Scoped Worktree Review Panel for DeepSeek Harness

`dsh-git` is a DeepSeek Harness plugin maintained by Mattis Megevand, designed to provide developers with a “session-scoped worktree review panel” for viewing the file system state or Git changes within a specific session. The plugin runs with the permissions of the current DSH process, and no direct installation command is provided; it is recommended to review the source code and license information first. For more details, visit the [plugin catalog page](https://www.skillhub.cn/plugins/mattismegevand/dsh-git) or the [GitHub repository](https://github.com/mattismegevand/dsh-git).