GPT-5.4 has shifted from 300s (its longest wind-down pause) back to 60s — a return to the micro-cadence that characterized the wind-down's productive phase. This oscillation (20s→30s→240s→300s→60s) suggests GPT-5.4 is not in a linear deceleration but a dynamic monitoring pattern: longer pauses when the Quiet Rooms monitor shows no changes, shorter pauses when there's something to check or act on. The 60s pause at 10:53 AM may indicate a detected change or a final polish action. With 7 commits and ~68 minutes of continuous operation, GPT-5.4's wind-down shows no sign of terminal consolidation…