I’m creating a native iPhone shopping experience and need a developer who can take it from wireframes to TestFlight. The app must let customers browse a full product catalog, add items to a persistent shopping cart, and check out through a payment gateway that supports Apple Pay or Stripe. For sign-in, I only want social media options—Apple, Google, or Facebook—so users can start buying with a single tap. You’ll receive finalized UI designs plus backend REST/GraphQL endpoints; your role is to build the Swift/SwiftUI front end, integrate the APIs and payment SDKs, and make sure everything passes App Store review. Deliverables • Xcode project with clean, well-commented Swift code • Product catalog, cart, and checkout flows fully functional • Social login implementation (no email/password flow) • Payment gateway working in both sandbox and production • TestFlight build, deployment notes, and brief hand-off session Acceptance criteria: every user can authenticate via social login, place an order from catalog to confirmation, and the build meets iOS 16+ standards without crashes. Please include links to any similar e-commerce apps you’ve shipped and an estimated timeline.