I want to turn my existing website into a lightweight Android app that simply opens the site in a WebView and keeps every part of the service fully functional on mobile. Once the app launches, users must be able to log in or create an account just as they do in a browser, with sessions persisting across screens so they never have to sign in twice. Please build the project in Android Studio, add a custom app icon and splash screen, and make sure any external links open in the device’s default browser while everything else stays inside the WebView. When finished, I’ll need the complete Android Studio source along with a release-ready APK I can submit to Google Play.