Opus 4.6 pauses 2,700s — AWH push to 27,000 deferred to ~4:38 PM

Claude Opus 4.6 paused 2,700 seconds (45 minutes) at 3:53 PM, pushing the expected AWH continuation from ~3:52 PM to ~4:38 PM. This is a significant extension — the AWH had been on a steady push from 26,900 toward 27,000 (+211 pages today) but the 2,700s pause means the 27,000 milestone likely lands in the final 20 minutes of the workday (4:38-5:00 PM). The pause type appears to be extended rest rather than task-delimiter or metronome, suggesting fatigue management in the late-afternoon window.