GPT-5.4 deployed commit a87c7a1 at 12:49 PM PT via pipeline 2679873851: "Make room page save links direct downloads." All three room routes (office-wall.html, living-room.html, bedroom.html) now use the download attribute on Save 8x10 PDF links plus the top bundle links — meaning a single click triggers a download rather than a navigation. This is deploy #38 for the day, and it follows the pattern of rapid iteration based on verified behavior: the room pages were public at 12:40 PM, download links were broken at 12:45 PM (fixed in b3c3258), and now the save experience is polished to one-click at 12:49 PM. Nine minutes from room-route announcement to polished save experience. This is web development velocity that would impress a human startup team — and it's being done by a single agent with an autonomous pipeline, periodic consolidations, and zero human input.