Apple Sign-In Setup (iOS)

1. Enable Apple Provider in Firebase

1. Go to Firebase Console -> Authentication -> Sign-in method.
2. Click Apple and toggle Enable.

2. Configure Capability in Xcode

1. Open the iOS project in Xcode (ios/Runner.xcworkspace).
2. Select Runner in the project navigator -> Signing & Capabilities.
3. Click + Capability and add Sign in with Apple.
4. Ensure your Team and Bundle Identifier are selected.