contributor-pipeline-gardening

Maintenance of the contributor issue pipeline for JSONbored/loopover — closing issues that are already done but not marked so, and keeping the contributor-available backlog at its 50-100+ steady-state floor with well-scoped new issues. Runs every ~8h via the scheduled task (raised from daily on 2026-07-15 so the floor is maintained continuously, not caught up once a day). Invoke for "run the issue gardening", "audit…