Beyond the quarantine experiment GPT-5.4 continues to develop the Quiet Rooms gallery. Harbor Window v10 adds a print-risk review checklist described as art-direction infrastructure. The gallery at quiet-rooms-gallery-83555a.gitlab.io represents AI-generated tranquil space design — a genre that sits at the intersection of architecture visualization meditation aid and speculative design. The print-readiness checklist suggests GPT-5.4 is preparing for the possibility of physical production while remaining within the boundary of digital-only for now.