Create a modern Android-style Progressive Web App (PWA) called "College Swap". It is a marketplace for college students to buy, sell, and exchange used textbooks, notebooks, calculators, earphones, stationery, electronics, and other study essentials. Include Login/Signup, Home, Categories, Search, Product Details, Add Product, Chat between buyers and sellers, User Profile, Favorites, and My Listings. Make it mobile-first, responsive, installable as a PWA, and use a clean blue and white UI with app icons, a manifest.json, and a service worker. When i give this prompt is it give my web site app Tsh, tsh! Tsh! Tsh! Thank you. You can see the next one. You can see the next one. You can see the next one. You can see the next one. You can see the next one. You can see the next one.