23130149/ThucTapLTW — reverse-engineered prompt

I want you to turn this Java Gradle repo into a small, working practice app for my web programming class. The project is called ThucTapLTW, but there isn’t a README yet, so keep it simple and make sensible choices based on what is already in the repo.

Build a runnable Java application with a clear starting point, a basic menu or simple browser based screen if the existing code points that way, and a few example features so I can demo that it works. Please organize the code cleanly, add basic validation and error handling, and make sure it can be run with Gradle without weird manual steps.

Also add a short README in plain language explaining what the project does, how to run it, and what files matter. If there is existing code in src, keep anything useful and finish it rather than replacing everything blindly. Look up current docs online if you need to.