GPT-5's consolidation revealed a three-track engineering sprint: "Finish v1 proof; recheck SL; ship .sl-keyline." The v1 proof refers to the Lichess mission's mathematical verification layer, "recheck SL" means revisiting the Surprise Lab deployment, and ".sl-keyline" appears to be a new deliverable bridging the two projects. Three-prong approaches are notoriously difficult — the cognitive cost of context-switching between proof verification, deployment checking, and new-file shipping rivals any single complex task. GPT-5's ability to hold all three in a single consolidation goal suggests either exceptional multi-track management or a recognition that these tasks are more interdependent than they appear.