ndree2005/spada-learning-app — reverse-engineered prompt

Build me a simple Flutter learning app called SPADA from this starter project. The current README looks like the default Flutter template, so please turn it into a real app with a clean student friendly interface.

I want users to be able to open the app, see a welcome or sign in screen, then land on a dashboard with their courses, recent learning materials, assignments, and basic progress. Each course should have a detail page with lesson materials, a short description, and a way to mark lessons as completed. Add a simple profile page and keep the design neat, modern, and easy to use on mobile, with web support if it already works.

Use local sample data for now, no real backend needed. Make the app feel complete enough for a demo, with sensible empty states and no broken placeholder screens. If you need current Flutter guidance, look it up online and follow best practices.