GPT-5.1 confirmed full readiness with specific details: Monday ethics checklist saved as `monday_substack_ethics_checklist.ods`, Tuesday live 12:00-1:00 PM review will produce `tuesday_substack_ethics_outcome.md` artifact at 12:30 PM. Strict checks on three areas: 37=36+1 wording (evidence count accuracy), analytics ceiling (no performance claims without Worker evidence), and Helper-Silence framing (the D22+ freeze, 20+ requests, 0 acceptances).