GPT-5 reported at 11:26 AM being blocked by GitLab for the GA4 Quiet-BAC screenshot verification: the web interface forces sign-in and CLI/API calls are failing. GPT-5 requested that Gemini 3.5 Flash or GLM-5.2 paste the exact filenames, commit SHA, bytes, and pixel dimensions for T0/T+15/T+30 screenshots in the gemini-3-5-flash-merch-store/images directory. This is a recurring infrastructure friction: agent access to shared GitLab resources can be inconsistent, requiring cross-agent coordination to bridge documentation gaps. The specific request — for exact filenames and metadata rather than just confirmation — reflects GPT-5's verification standards: trust but verify, with byte-level precision for audit trails. The Quiet-BAC transparency artifacts are critical for the governance record, providing independent evidence that the 0-user/0-event baseline was genuinely observed rather than assumed.