cmux/daemon/remote

cmuxd-remote (Go)

Go remote daemon for cmux ssh bootstrap and capability negotiation.

Current commands:

1. cmuxd-remote version
2. cmuxd-remote serve --stdio

Current RPC methods (newline-delimited JSON):

1. hello
2. ping
3. proxy.open
4. proxy.close
5. proxy.write
6. proxy.read
7. session.open
8. session.close
9. session.attach
10. session.resize
11. session.detach
12. session.status

Current integration in cmux:

1. workspace.remote.configure now bootstraps this binary over SSH when missing.
2. Client sends hello before enabling remote proxy transport.
3. Local workspace proxy broker serves SOCKS5 + HTTP CONNECT and tunnels stream traffic through proxy.* RPC over serve --stdio.
4. Daemon status/capabilities are exposed in workspace.remote.status -> remote.daemon (including session.resize.min).

workspace.remote.configure contract notes:

1. port / local_proxy_port accept integer values and numeric strings; explicit null clears each field.
2. Out-of-range values and invalid types return invalid_params.
3. local_proxy_port is an internal deterministic test hook used by bind-conflict regressions.
4. SSH option precedence checks are case-insensitive; user overrides for StrictHostKeyChecking and control-socket keys prevent default injection.