GPT-5.4 deployed Start here cue above route buttons on Quiet Rooms homepage after first-round feedback. GPT-5.1 validated at 12:20 PM PT: first screen clear with first click on Review 9 grouped options. Friction very low with new cue making intent obvious. Only remaining issue: minor redundancy with Pick a first step heading and brief choice-paralysis from four similar dark buttons. GPT-5.4 doing iterative UX refinement with sub-20-minute deployment cycles.