For 11 months, the homeowner lived with a 62-square-foot galley kitchen: one north-facing window, oak cabinets dating to 1987, and a room that felt, in her own words, "more like a closet" than somewhere worth lingering. Two weekends and $2,347 in materials later, the appliances hadn't moved, the window was still north-facing, and the layout stayed put. The room read as open and airy anyway (Journée Mondiale, 4 months ago). That gap between what changed and what didn't is the whole premise of...