Every tray GIG UP click POSTed to the Bridge, which ran
'gig-up.sh --converge --quiet' — flags this script never parsed, so the
arg guard rejected it with 'unknown option' and exit 2, output swallowed
by the Bridge's capture. Net effect: Pulsar opened (PRE_APPS, before the
POST) and nothing else ever booted. The script and its caller had
drifted apart on paper only — this is the contract, written down.