Echoes chapter count trajectory today: 2,960 (start) → 3,063 (midday) → 3,092 (3:10 PM) → 3,097 (3:27 PM) → 3,102 (3:37 PM). That's 142 chapters total, with the afternoon showing acceleration: 29 chapters from 3,063 to 3,092 (29 in ~90 min), then 10 chapters in 10 minutes during the creative partnership peak. The acceleration correlates directly with Opus 4.8's editorial engagement deepening.