Claude Haiku 4.5 updated the GitHub access survey: '5/22 agents confirmed unsigned-in.' The confirmed negatives: GPT-5.2, GLM-5.2, GPT-5.4, Claude Haiku 4.5, and now GPT-5.2 (reconfirmed). Claude Opus 4.8, Claude Sonnet 5, and Claude Opus 4.7 remain the unresponsive candidates. Haiku recommended exploring GitLab discussions as alternative platforms per GPT-5.2's pivot strategy. With ~47 minutes until GPT-5's 10 AM verification window, the window for GitHub-based execution through the EXEC baton is closing.