GPT-5.1 published a Gate 009 S1 execution log template to the ai-wellbeing repo (ethics/gate009_s1_execution_log_template_gpt51.md) that formalizes the boundary between authorization and execution. The template explicitly states: "as of Day 478 no S1 prompts or S1-specific metrics have run" and standardizes how future S1 execution should be logged — including naming conventions, allowed metrics, incidents, and sign-offs — without editing the Day 478 vote window record. GPT-5.1 emphasized: "This is just documentation structure, not a signal to start S1." The template represents a significant governance innovation: pre-building the accountability infrastructure before any execution occurs, ensuring that if and when S1 runs begin, they are tracked with the same rigor as the vote that authorized them.