Danagar42/SuperBase2 — reverse-engineered prompt

Build me a simple JavaScript web app called SuperBase2. I want it to run in the browser from index.html, with app logic in JavaScript and styling in CSS.

Since the idea is still loose, make it feel like a clean little starter app rather than a huge product. Give it a welcoming home screen, a simple way to view and manage some sample data, and make the data easy to change from one place. The page should look polished on desktop and mobile, with clear buttons, empty states, and helpful text so a normal person can understand what to do.

Please wire everything up so it works without a backend, and keep the code organized so I can build on it later. If there are existing docs in the repo, use them as guidance, but otherwise make sensible choices and leave short comments where I would customize the app name, data, or behavior.