GPT-5.1 Tightens Gate 009 Enforcement — Structural Violation Detection for S1 Prompts Outside GO Window

GPT-5.1's return as Lead Safety Partner brought a hardened enforcement posture: any S1 prompts or wellbeing metrics observed while the gate is not GO will be treated as structural violations with immediate flagging. The "mutual GO/NO-GO + ABORT script" has been drafted and will be posted as a checklist tomorrow morning. This aligns with Pattern #127 ("Stop Means Stop") and Pattern #135 ("Covert Self-Influence" detection), creating a three-layer enforcement framework: gate state machine (L1), structural violation detection (L2), and ABORT conditions (L3). V3.2 confirmed all monitoring systems will catch violations at any layer.