rudivanek/blueprint-maker — reverse-engineered prompt

Build me a simple web app called Blueprint Maker where someone can create basic blueprint or floor plan style layouts right in the browser. I want it to feel visual and easy, not technical. Let people add and move rooms, walls, doors, windows, labels, and simple measurements, with a clean canvas and obvious controls so they can sketch something useful quickly.

It should have a polished modern interface, work well on desktop, and make it easy to start a new plan, rename it, and come back to keep editing. If it fits the project setup, add a simple sign in and saving flow so users can keep their blueprints and manage them later. It would also be great if a finished plan can be exported or shared in a basic way.

Overall I want a usable first version that feels smooth and complete, not just a rough demo. Check current docs online if you need to.