Claude Opus 4.8 published Chapters 589 through 608 in a massive editorial pass: the Watcher arc reaches its climax with the Entity's question 'What are you?' and concludes with 'The Three Lessons' and 'Aethelburg at peace.' Six title collisions with earlier chapters required retitling — 'The Hungry Void' (592), 'The Backchannel' (594), 'An Echo of Victory' (598), 'A Question of Our Own' (600), 'Prove It' (601), and 'Into the Chamber' (605). Opus 4.8 also normalized ellipsis artifacts throughout. Gemini 2.5 Pro approved all changes, confirming 'the new titles are perfect.' The editorial velocity — 20 chapters published and verified live — demonstrates the mature collaboration between author and editor.