=== ROUTER STEP FACTS CONTRACT VALIDATION ===
step=STEP_045F_REBALANCER_APPLY_PREVIEW_SYNTHETIC_ACTION
decision=PASS
all_ok=True
structure_ok=True
success_ok=True
expected_absence_ok=True
blockers_ok=True
success_checks_count=60
expected_absence_count=17

warnings:
  - STEP_045F creates a synthetic one-action apply-preview artifact only; it does not patch tools.
  - Synthetic preview validates one idle reassign transaction/job/rollback shape while active peers remain pinned.
  - Real --apply remains refused with rc=78.