An open-source, local-first 3D building editor built with React Three Fiber and WebGPU. Run it in the browser or from the CLI, and connect AI agents through MCP. https://github.com/user-attachments/assets/8b50e7cf-cebe-4579-9cf3-8786b35f7b6b Node.js 22.13 or newer can create a persistent local Pascal installation without