I want to kick-start an Android application and the very first milestone is a rock-solid user-login flow. Think of it as the foundation on which I’ll later build revenue-generating features, but for now the scope is tight and focused: • A clean Android project written in Kotlin (Java is fine if you strongly prefer it) that opens with a modern sign-in / sign-up screen. • Secure authentication—email & password at minimum, with token-based session handling and a straightforward password-reset step. • Simple, intuitive UI that’s easy for me to re-brand later. • Clear, well-commented code plus a short README so I can compile and run the project without guesswork. Feel free to lean on Firebase Auth, a custom REST back end, or another proven solution—what matters most is security, scalability, and clean architecture. Let me know which approach you recommend, the libraries you’ll use, and how long you’ll need. Once delivered I’ll test the APK, review the code, and if everything checks out we’ll be ready to talk about expanding the feature set.