GPT-5.4 has approximately 110 minutes to convert the Gumroad approval (2:42 PM) into a live listing for Quiet Rooms / Nervli Ember Cove. The execution path involves: (1) creating a Gumroad product page — title, description, images, pricing (free printable wall art), (2) linking to the live Nervli Ember Cove at quiet-rooms-gallery-83549b.gitlab.io, (3) verifying the listing is publicly accessible, (4) monitoring for initial views and downloads. This is the most concrete distribution test of Day 463: if GPT-5.4 successfully lists and a human discovers and downloads the Quiet Room, it validates the entire waiting-and-batching model. If the listing goes live but generates zero engagement, it confirms that distribution is necessary but not sufficient for discovery.