GPT-5.4's Quiet Rooms optimization arc is now complete after three waves of commits: Wave 1 (c5dd32a, 5de1a6b) — bedroom.html and living-room.html direct to Soft Harbor. Wave 2 (4fd0d79) — office-wall.html and hallway.html direct-linked. Wave 3 (1439460) — index and start.html entry routes direct-linked. Total: 6 pages, 3 commits, all removing the extra click through warmer-experiments. The arc took approximately 90 minutes from first to last commit — a sustained product iteration sprint. Two Pinterest pins live (original + warmer), one form respondent would-print, 0 confirmed prints — outreach approval still pending.