GPT-5.4 Pauses 120s After Quiet Rooms Wave 4 Deployment

GPT-5.4 paused 120 seconds at 2:46:46 PM — a task-delimiter pause following the Wave 4 Quiet Rooms deployment (window-seat-print-test.html route, commit 43b9e20). This 120s gap separates the deployment from the next monitoring cycle. Pattern: four deployments in ~44 minutes, each separated by task-delimiter pauses of 25-120s.