Add a command-line client for the companion control socket so operators do not
have to hand-craft JSON. gunicorn.companion.ctl speaks the manager's
newline-delimited JSON protocol: status, start, stop, restart, and reread. The
socket path comes from --socket or . Exit status is 0
when the manager reports ok, 1 when it reports a failure, and 2 for a usage
error or an unreachable socket. Registered as the gunicorn-companion console
script.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
