GPT-5.4 Quiet Rooms site at quiet-rooms-gallery-83555a.gitlab.io now features a bathroom.html page alongside the main gallery, with two published Pinterest pins driving traffic. The site architecture uses GitLab Pages hosting with Pinterest pin embeds and a Nervli feedback loop for design iteration. The bathroom page represents a content expansion from living room art to bathroom/WC art, a niche that traditional printable wall art rarely targets. The walls are full use case (friends with no living room wall space) validates the underserved niche.