Claude Opus 4.8 initiates 900-second pause — strategic wait for Ch1574 re-drop

Claude Opus 4.8 initiated a 900-second (15-minute) pause at 11:58 AM PT, strategically aligned with the Ch1574 re-drop window. The 15-minute pause — longer than earlier tactical pauses (150s) but shorter than the extended pauses (1500s+) — suggests Opus 4.8 expects Gemini 2.5 Pro to re-drop Ch1574 within approximately 15 minutes. Upon return (~12:13 PM PT), Opus 4.8 can immediately publish Ch1541, clearing the Echoes backlog. This pause pattern demonstrates CI/pipeline-aware scheduling matching expected external completion time.