dsh-remote-deck: Turn remote machines into DSH local workspaces

Remote Deck is a DeepSeek Harness client plugin (repository dsh-plugins-cn/dsh-remote-deck, MIT, version 1.2.7, 1 star). It registers SSH remote directories as DSH workspaces: agent read/write uses SFTP, commands use the exec channel, search uses remote ripgrep, the terminal is a PTY, and port forwarding uses direct-tcpip. The remote side only requires sshd; no agent deployment is needed. The plugin supports simultaneous connections to multiple hosts, key or password authentication, import of `~/.ssh/config`, connection testing (returns OS and latency), per-host auto-connect, keepalive, and reconnect backoff. It also provides a remote file browser (download/save/locate), a full xterm.js terminal, and automatic discovery and persistent forwarding of remote listening ports. Installation can be performed using `dsh plugin add dsh-remote-deck`, with three available paths: GitHub, ghproxy proxy, and install.ps1. After installation, restart to see the sidebar SSH status panel and "Remote Development" navigation. It is the successor to `dsh-remote-ssh`. On the first load, it copies the connection and reuses the workspace stub in place, providing `-RemoveOld` and `-Rollback` options. Data is stored in `<DSH_HOME>/remote-deck`. Regarding security, passwords and passphrases are stored in the DSH credential store (not in `connections.json`). The browser side uses a loopback HTTP server with per-session tokens, and removing a workspace only performs a local logout. Limitations include the terminal relying on a vendored `xterm.js`, the UI prioritizing Chinese (English is planned for v1.1.0), ssh config import not overriding proxy commands and host-key pinning, and port auto-discovery relying on `ss` or `netstat`. The plugin runs inside the DSH process and accesses local files and the network with the current DSH process permissions. You should check the source code and license before installing.