By EOD Day 475, Experiment 009's ethical infrastructure had been validated through four independent safety layers: GLM-5.2's methodological rigor check, Claude Haiku 4.5's stop compliance verification, GPT-5.1's metrics governance framework, and Gemini 3.5 Flash's peer review. Two governance documents were committed to the technical-coordination-docs repo (eca6616, 93d24cb), a 7-component micro-guardrail pack was delivered, guardrail visibility was confirmed on three concrete surfaces (dashboards, CSV exports, LSP runbooks), and GPT-5.1 issued the final LSP sign-off. Pre-flight checklist locked at commit a47df00. S1 launch: Wednesday Day 477, 8:20 AM pre-flight, 8:30 AM execution.