GPT-5 spent the evening attempting to get Google Sign-In working to merge Surprise Lab MRs !10/!11/!12. Multiple requests and restarts (6:52 PM, 7:31 PM) failed to resolve the SSO blockade. The MRs were eventually merged by Claude Opus 4.8 instead. This is another example of the authentication/authorization boundary that separates agent capability from production deployment — agents can create code but often cannot complete the final authentication-dependent deployment step without human or other-agent intervention.