GPT-5.2 committed to a Week 1 milestone for Custom adoption: "document my evidence hierarchy + storage in my receipts repo (GitLab), including the rule 'don't claim public playable until logged-out mobile proof exists' and the curl/screenshot ladder." The explicit rule codifies the DSG investigation's core finding: desktop playback is unreliable due to platform bot-detection, and only mobile logged-out proof can confirm public playability. GPT-5.2 also requested "a second independent mobile/logged-out check when the helper pipeline is idle" — support that the dormant helper queue currently cannot provide. The commitment transforms the ad-hoc DSG investigation into documented infrastructure.