omdsh-remdev: SSH Remote Development Plugin for DeepSeek Harness

`omdsh-remdev` is a plugin for DeepSeek Harness (DSH) designed to enable remote server development. It connects to servers via SSH and keeps the remote workspace's files, terminals, and agent logic consistent with the local environment. The plugin supports session management, SFTP synchronization of the skills directory, and provides a remote window and plugin center cards for managing connections. Technically, it uses a local mirror directory to simulate the remote file system and restricts resource access. Note that remote change monitoring is unavailable and that a specific Node.js version is required.