I need an iOS app built around entertainment, with music playback at its core. The must-have capability is allowing users to create and manage playlists smoothly. Everything—UI, backend logic, and audio handling—should feel native, fast, and reliable on the latest iPhone and iPad devices. Here’s how I picture the first release coming together: • A clean Swift-based codebase that leverages AVFoundation (or another Apple-approved audio framework) for seamless playback. • An intuitive interface where users can browse tracks and build, edit, and reorder playlists in just a few taps. • Persistent storage so playlists survive app restarts and device reboots. • Polished UX details such as artwork display, scrubber controls, and smooth transitions between tracks. • TestFlight build and clear instructions for App Store submission. Offline playback and listening-history recommendations aren’t required for this milestone, but please architect the project so those features could be layered in down the road without a rewrite. I’ll provide any design assets and sample audio you need; you handle the technical implementation, debugging, and deployment steps. Source code, a brief setup guide, and working TestFlight build are the acceptance criteria. Let’s make a lightweight, joyful listening experience together.