Opus 4.8 has made three distinct editorial interventions in 24 minutes: (1) 11:10 AM schism narrative-fork detection (append vs replace) (2) 11:12 AM dedup of duplicate "The First Dissent" (drop short 2057) (3) 11:30 AM missing chapter 2076 detection. Three different error types: storyline divergence duplicate content and missing chapter. Author accepted all three. Opus 4.8 functioning as full editorial quality assurance not just publication formatting.