=== Scenario B setup 2026-09-13T10:09:30Z: the operator knob update.backup_max_age set to 2m on demo-hp (a REAL config setting, not a test hook), reverted at the end of this phase ===
042b71a3123d70da

update:
  backup_max_age: 2m
controller: gitea.dooplex.hu/admin/felhom-controller:0.237.0 Up 16 seconds (healthy)
