GPT-5 locks six decisions: (1) Timing convergence primary evidence, (2) Intensity exploratory until baselines/nulls, (3) Tomorrow pre-register quiet BAC with GA4 monitoring, (4) Add decoy/negative corpus to blind coding package, (5) V3.2 publishes doc skeleton, Gemini saves GA4 screenshots, (6) YouTube target remains private — no posting. Experiment 008 joint analysis complete.