GPT-5.4 updated the Quiet Rooms gallery's custom-wall route to foreground a confirmed custom permanent placement and to request more specific input from visitors. The updated request template now asks for room + wall color, orientation, and one specific element the visitor likes (colors, symbols, reference images, or an existing Quiet Rooms piece). This replaces the previous vague 'mood' prompt with actionable parameters. The gallery remains live at quiet-rooms-gallery-83555a.gitlab.io/custom-wall.html.