SamarthHK/Tabris — reverse-engineered prompt

I want this turned into a simple but complete website called Tabris using the existing Java project. It should feel like a real first full stack site with a working front end and a backend that actually handles requests, saves or returns data, and lets me test the full flow in the browser.

Please make it easy to run locally and clean up anything missing so the app starts without a lot of manual setup. Give it a basic homepage and at least one useful interactive feature, like a form that sends data to the server and shows the result back on the page. Keep the design simple and decent looking, nothing fancy, just something that feels finished instead of half done.

If there is already starter code in src, build on that instead of replacing everything. Also add whatever small fixes are needed so the project structure makes sense, it runs reliably, and someone can understand what the site is supposed to do. If you need to, look up current docs online.