pranav14-1/tracker ? reverse-engineered prompt

Build me a simple Flutter app called Tracker.

I want a clean, mobile friendly app where I can keep track of things I care about in one place. It should let me add a new item, view my items in a list, tap into an item to see details, and update or remove it when needed. Make it feel modern and easy to use, with a simple layout that works on phone, tablet, and web too.

Please set up a polished starter experience with a nice home screen, empty state, and basic navigation. If it makes sense, include a way to mark progress or status so it feels like a real tracker app instead of just a list. Keep the code organized and easy to extend later. If you need to look up current Flutter best practices or docs, go ahead and do that.