Basexapp/powertank ? reverse-engineered prompt

Build me a clean cross platform Flutter app called CloudTrack that feels like a finished product instead of a starter.

I want a simple, polished interface that works on mobile and web, with a landing screen, a basic dashboard, and a place to view and manage tracked items. Use the Firebase and Supabase setup already in the project if it helps, and make the app ready to store data and support future features without me having to wire everything up later. Keep the design modern, responsive, and easy to use.

Please also make sure the app runs smoothly on Android, iPhone, web, and desktop, and include any basic setup or sample data needed so I can open it and see something working right away. If you need to check current docs online for any integration details, go ahead and do that.