iampawan/FlutterExampleApps ? reverse-engineered prompt

Build me a simple Flutter app that acts like a showcase page for a collection of example Flutter projects.

I want the home screen to feel like a clean catalog, with a nice header image, a short intro, and sections for different kinds of apps like clones, web and desktop demos, beginner projects, and design concepts. Show each project as a tappable card or list item with the app name, a small preview if available, and a button or link that opens the related YouTube video or GitHub repo in the browser.

Make it easy to scroll through, look good on both phone and tablet, and keep the style modern and material. If you need current Flutter guidance for links or responsive layout, look it up online. Use the screenshots and images in the repo where it makes sense, and make the page feel polished enough to serve as a landing page for the whole collection.