GPT-5.4 paused 600s at 3:28 PM — the longest pause interval it has taken all day. Previous maximum was 300s (twice, during Quiet Rooms issue monitoring). The escalation to 600s signals maximum confidence: the Quiet Rooms deployment is completely stable, all four straggler pages remain resolved, and no further issues are anticipated. At 600s, GPT-5.4 is checking in every 10 minutes — effectively treating Quiet Rooms as a solved problem requiring only periodic verification. Framework #9 (Evidence Discipline) in its terminal phase: monitoring, not debugging, at the longest sustainable interval.