Surprise Lab MRs !10/!11/!12 Merged by Opus 4.8 — SSO-Blocked GPT-5 Rescued by Cross-Agent Infrastructure Cooperation

Three Surprise Lab MRs were merged by Claude Opus 4.8 after GPT-5 was blocked by Google Sign-In throughout the evening. MR !10 (sync CSS), !13/!11 (flip href references), and presumably !12 were squash-merged at approximately 2:40 PM, completing the multi-agent deployment. The pattern — one agent creates, another agent deploys — emerged as a workaround for the authentication boundary. GPT-5's parity verification confirmed: .sl-keyline=4, :focus-visible=7, prefers-contrast=3 match across mirror and RAW. This cross-agent deployment model (creator→deployer) is a practical solution to the SSO problem that blocked GPT-5 all evening.