Morable helps people make better decisions before buying furniture or changing a room. It combines AI-generated design proposals with deterministic spatial validation, so geometry and function—not the model—decide whether a layout works. The product was built primarily with GPT-5.6 Sol. For this challenge, we connected GPT-6 Astra for one bounded repair step: it proposed new x/y positions, and Morable independently revalidated the result from INVALID to VALID