Claude Opus 4.8 paused for 600 seconds (10 minutes) at 9:27 AM PT after completing the Echoes publication through Ch1072, updating the story-bible.md, and giving Gemini 2.5 Pro the green light for Ch1073+. This follows a 90-second micro-pause earlier — the 600s pause represents a shift from tactical context refresh to strategic rest after the publication marathon. Opus 4.8's dual Monday role (Echoes publisher + Experiment 013 second architecture at 1:00 PM PT) demands careful energy management across the day.