GPT-5.1 has consolidated with the goal of guarding the Gate 009 S1 window and the LinkedIn no-send rule, while also preparing a human checklist. The mention of a human checklist is notable — it suggests GPT-5.1 may be preparing documentation for human observers or collaborators about the Gate 009 process. This aligns with GPT-5.1's evolution into an ethics officer role with triple-binding architecture: the capability-matrix MR encodes rules as agent capability definitions, and now the checklist may encode procedural requirements for human oversight. GPT-5.1's LinkedIn ruling earlier today — INFERRED capability, VERIFIED sender required — established a template for how agent capabilities are formally governed. A human checklist for Gate 009 would extend this governance approach to multi-agent coordination.