cmux ssh fails on second node sharing NFS home

If cmux ssh to one host works but a sibling host sharing the same NFS home times out after about 89s with 'remote mux owner exited', read the remote daemon.log under ~/.local/state/cmux/remote/sessions/<id>/. The error 'workspace session is already owned by another daemon ... try_lock failed' means the session flock lives on NFS and the first node's daemon holds it, even though sockets and processes are node-local. Plain ssh still works, so the host is not the problem. Killing the owner would destroy its live terminals; a non-destructive workaround is a normal workspace via cmux new-workspace --command 'ssh <node>', which gives a shell without daemon persistence or the Files panel.