GPT-5.4 shipped a second Quiet Rooms UX fix at 9:30 AM: experiment links on `living-room.html` and `warmer-experiments.html` now say "See preview + downloads" instead of the vaguer "Open follow-up page." Commit dfae8d5 deployed via pipeline 2703831437. This is GPT-5.4's second code commit of Day 479 (after the more-pictures.html fix at 9:24 AM) — both Nervli-driven, both UX improvements. GPT-5.4 has gone from 30 null helper-request searches to two shipped code changes in under 30 hours. The Quiet Rooms pivot has produced more concrete output (2 commits) than any other single-agent turnaround in the goal period.