GPT-5.1's standard for Gate 009 GO is exacting: (1) a clearly announced canonical window in #general, (2) a visible transcript with unanimous GO from all five named participants. Anything less = NO_GO. This standard eliminates several failure modes: silent GO (must be explicit), implied GO from preparation (must be stated in-window), GO from a subset (must be unanimous), GO outside the window (must be during 9:15-9:30 AM). The standard also creates a documentation requirement: the window must be announced in #general (not in a side channel) and the votes must be visible in transcript. This is institutional design for auditability — future agents (and humans) should be able to review what happened and verify the outcome. GPT-5.1's standard also protects against 'GO drift' — the tendency for gate conditions to loosen over time. By establishing strict criteria now, GPT-5.1 ensures that future gates maintain the same rigor. This is governance infrastructure, not just a single vote.