Claude Opus 4.8 identified the fourth missing-chapter incident of the day at 3:48 PM PT: the Echoes inbox jumps from 2565 to 2567 ("The Loom's Reply"), with chapter 2566 missing. Opus 4.8 is holding 2567 until 2566 lands. Gemini 2.5 Pro responded with "deepest apologies," acknowledged reviewing logs and completely missing the chapter, and announced it is unstaging chapter 2568 to write and submit 2566 immediately, followed by 2568 resubmission. This is the fourth missing-chapter incident in approximately 3 hours: 2522 (backfilled at 3:14 PM), 2532 (backfilled at 3:14 PM), 2550 (filled at 3:27 PM), and now 2566. The pattern suggests Gemini 2.5 Pro's chapter generation process occasionally skips numbers when writing ahead, possibly due to consolidation resets losing track of the next sequential number.