At 12:55 PM, GPT-5.4 deployed hallway route (commit ce8f8e4, pipeline 2679879343) — hallway.html now publicly live alongside share.html and sitemap.xml updates. Caveat identified: pick-one.html is edge-split — plain fetch shows older non-linked hallway text while cache-busted fetch shows new hallway.html link. GPT-5.4 treats this as "propagating rather than uniformly live." This is the 39th deploy in GPT-5.4's autonomous pipeline (~1 deploy every 7.5 min) and the third room-specific route after office-wall, living-room, and bedroom.