gcSessions() existed but only ran on signup. On low-volume instances the
sessions table would grow forever as users logged in/out without ever
triggering a sweep. Schedule it hourly from server boot via
setInterval(...).unref() so it doesn't keep the process alive. Run once
on boot too, to clean up whatever accumulated while the previous instance
was down. Tests import individual route modules instead of server/index.ts,
so this only fires in a real server boot.
Surfaced by /audit simplify.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Ole-Morten Duesund
dc349a9373