A stdio-only MCP server (protocol `2026-07-28`) that runs commands on remote hosts through long-lived SSH shell sessions. It's built for targets where the SSH command can only be run once — a PAM/PSM bastion that dispatches on a specially-crafted username, where multiplexing isn't available — but it works against any remote shell reachable over SSH. See [PLAN.md](PLAN.md) for the