dsh-ssh-plugin: DeepSeek Harness SSH Remote Execution Plugin

`dsh-ssh-plugin` is an SSH extension plugin for DeepSeek Harness, maintained by Azurer0121, designed to simplify agent interactions with remote Linux servers. Through the `ssh_exec` and `ssh_connections` tools, it enables a model to directly execute remote Bash commands and manage persistent connections. Core features include key-based authentication, automatic integration of `~/.ssh/config`, workspace binding for environment isolation, and permission handling in Windows environments. Installation is straightforward, supported via npm, GitHub, or local builds. When using the plugin, note that it only stores key paths, does not handle password prompts, and remote commands follow standard Shell escaping rules.