KNoe24/EclipseClient ? reverse-engineered prompt

Build me a simple JavaScript launcher app with a clean desktop style interface.

I want it to feel polished and easy to use, with a main screen, a few basic controls, and room for future features. Make the layout responsive, keep the design modern and dark if that looks good, and include sensible default states so it doesn’t feel broken when there’s no data yet.

If anything is unclear from the existing project, check the current docs or look up what you need online before guessing. I’d like the app to run smoothly, be easy to extend later, and have the core pieces wired up so I can open it and see something usable right away.