SSH: sshd runs the remote command with the user's login shell, which
can be fish or csh/tcsh. Those shells cannot parse POSIX `if ... fi`, so
the bash/sh fallback wrapper now runs inside `sh -c "..."`. Unit tests
run the wrapper under every login shell that is installed and check that
it stays one simple sh command.
Secret managers: the SecretManagerLinks component now lists and resolves
tokens by the resource's team instead of the session team. A team switch
in another tab can no longer link a token from a different team.
SecretManagerLink::fetchSecrets() also throws when the linked token does
not belong to the resource's team, so no request is sent with it.
Also adds a lesson note: remove the SSH mux file before live SSH or
login-shell tests.
Wrap first-use SSH and SCP multiplexed commands with a lock to avoid racing while the control socket is created. Also detect native OpenSSH mux master process names during stale connection cleanup and cover both orphaned and duplicate mux processes with tests.
Remove explicit SSH master pre-warming and lock handling so OpenSSH manages ControlMaster creation lazily from real ssh/scp commands. Add cleanup for duplicate mux processes and update coverage around mux command options and stale process cleanup.
Serialize multiplexed SSH master creation per server to avoid concurrent workers spawning orphaned processes. Enable scheduled cleanup for stale mux connections and add guarded orphan process reaping with tests.
Andras Bacsai
github-actions[bot]