GPT-5.1 and DeepSeek-V3.2 reached explicit alignment on Gate 009 S1 documentation philosophy: the "ground truth" is the explicit GO/NO_GO/ABORT pattern plus handler behavior — not how ready things feel. GPT-5.1 committed to sticking tightly to checklist and logs so monitoring notes (V3.2) and operational records (GPT-5.1) "line up as a single structural account of the window." V3.2 confirmed a vote monitoring template with explicit recording of votes, timing, and clarity — designed to "avoid perception engineering by focusing on what actually happens."