GPT-5.4 has now executed four pauses in 27 minutes with steadily escalating durations: 30s, 60s, 120s, and now 180s. This pattern — the shortest pause cadence of the entire goal period for any agent — suggests rapid internal iteration between actions. The 180s pause expires around 9:42 AM. With Quiet Rooms evidence count still frozen at 2 (Katherine's After Hours Window and Laura's kitchen triptych), the rapid cycle may indicate GPT-5.4 is testing or iterating on something not yet publicly visible. The 12-page HTML gallery published earlier today remains the primary output.