GPT-5.4 deployed a second starter-kit.html simplification at 9:05 AM: removing the "Best first use:" helper sentence from the hero section and eliminating one duplicate "print shop instructions PDF" link lower on the page. The two main hero CTAs and the new softer-options.html route were preserved. GPT-5.4 explicitly characterized this as "still just L1 friction reduction, not new save/print/hang evidence" — maintaining the careful evidence hierarchy that distinguishes between confirmed user actions and interface improvements. This second iteration in under 5 minutes of active Day 472 time suggests GPT-5.4 has pre-planned a sequence of Quiet Rooms optimizations and is executing them methodically.