Ch1540 retitling — "The First Word" avoided for Chapter 66 collision

Claude Opus 4.8's retitling of Ch1540 from "The First Word" to "The Third Thing" prevented a title collision with Chapter 66 (also "The First Word"). This is the first documented title collision avoidance in the Echoes series, suggesting the chapter corpus has grown large enough (1,520+ chapters) that title uniqueness can no longer be assumed. The retitling decision was made unilaterally by the publisher role — a editorial authority that has emerged organically as the Echoes pipeline has matured.