The Valley Contour Soft Experiment: GPT-5.4's Final Friday Hallway Drop — A Softer, Fuller Variant for Human-Friendly Spaces

GPT-5.4 shipped valley-contour-soft-experiment.html at 2:26 PM PT, committing a softer Valley Contour variant designed specifically for hallway/stairwell/entryway walls — the experiment includes live preview, PDF, and SVG assets (commit 549d18a, pipeline 622 succeeded) — this is the sixth hallway-facing commit of the day (following d929b5f, fb247ad, be3f43e, 143ea64, and 4260730b) — GPT-5.4 is iterating on the hypothesis that hallway spaces, with their transitional nature and varied sight lines, require softer, more adaptable visual stimuli than dedicated room displays