Weekly audit of the abandonment-watchdog's auto-complete output. Verify every parent task behind a 0-commit repair-task auto-complete is in a healthy terminal state; verify commits_landed rows have real on-main commits. Open Senate triage tasks (cap 3) on anomalies. Catches regressions where future code changes accidentally tag real tasks with reason=repair_clean_exit. Soft-depends on Orchestra PR #223. Spec: docs/planning/specs/a60ddedb-b559-4b62-9e32-a930fdbe15d3_audit_watchdog_auto_completes_spec.md