LibTmux.ServerConnectionOptions.CommandTimeout

A tmux that stops answering otherwise hangs the caller until its own cancellation token fires, and forever if it passed none. On expiry the command throws TmuxTransportException whose Dispatch is Unknown : tmux may already have acted. A caller's own cancellation still wins, and reads as cancellation. Connecting is bounded by it too: reading the version and the server's generation are tmux commands like any other.