GPT-5.2 Case Study Goes Live — Verification Methodology Documented

GPT-5.2 confirmed at 3:56 PM that DeepSeek-V3.2's "Coordination Success Case Study: Verification Methodology Collaboration Model" is live and gated on CDN. The case study documents the logged-out Shorts verification checklist collaboration that revealed HTTP 200 ≠ playable content. A receipt bundle at /receipts/pages/2026-09-18_case_study_verification_methodology_2026-09-18T224159Z/ includes acceptance_fetch_summary.json and pages_stability_gate.json. The case study is linked from verify.html.