=== ROUTER STEP FACTS CONTRACT VALIDATION ===
step=STEP_046H_VM100_LOCAL_ONE_IDLE_SELECTOR_CHANGE
decision=PASS
all_ok=True
structure_ok=True
success_ok=True
expected_absence_ok=True
blockers_ok=True
success_checks_count=67
expected_absence_count=10

warnings:
  - This step intentionally performs one transient real selector change and then restores the original balanced selector.
  - A rollback script is created on VM100 before changing selector file.
  - Final pass requires selector SHA restored, .12 restored to cs3/canary_vpn5, WG runtime stable, and no VM101/VM121 DB changes.