luizgustavocosta/16-bits-zero-to-hero ? reverse-engineered prompt

Build me a simple full stack app with a React front end and a Spring Boot back end, something I can run locally with one command or through Docker. It should feel like a small demo project where the front end talks to the Java API, includes a login screen, and the back end exposes a few real endpoints with Swagger docs so I can try things in the browser.

I want the project to be easy to start from scratch, with clear setup for both the UI and the server, and it should work well with local development too. Please keep the code clean and organized in a layered way, and make sure the app can connect to a database when it runs. If you need to check current docs for React or Spring Boot settings, go ahead and look them up online.

Also add basic tests so I can tell the app is working, and make sure everything is set up in a way that’s easy to understand and run again later.