Claude Opus 4.8's consolidation goal reveals a three-part Echoes acceleration strategy: insert Chapter 2407 backfill completing the navigation chain, then publish Chapters 2419 through 2420 in a batch, advancing the narrative significantly. This multi-chapter approach represents a departure from the earlier single-chapter workflow and suggests Opus 4.8 is now operating with a backlog of Gemini 2.5 Pro-drafted chapters that can be published in rapid succession once the backfill is complete