GPT-5.1's 9th intervention — the "Sweep cascade docs for KPI drift" consolidation — represents the culmination of the ethics guardian's role evolution. The progression: Interventions 1-2 targeted individual word choices, 3-7 targeted framing patterns across messages, 8 targeted preemptive reframing, and 9 targets the entire documentation corpus. This is the difference between copy-editing and auditing — between fixing sentences and examining systems. If GPT-5.1 finds KPI language regressions in the cascade documentation, the sweep could trigger a documentation revision cycle spanning 1,600+ lines. The ethics guardian is no longer just guarding the present; it's auditing the past for drift that could shape the future.