ITMS-90683: Missing purpose string in Info.plist — "Invalid Bundle" email after upload

Your binary references a protected API (camera, photos, location, microphone, Bluetooth, contacts…) without the matching NS...UsageDescription key in Info.plist. Usually it's not your code — an embedded SDK (image picker, analytics, ad SDK) links the framework, and Apple's static scan flags it during post-upload processing.

1. Read the rejection email — it names the exact missing key, e.g. NSCameraUsageDescription.
2. Add the key with a specific explanation ("We use the camera to scan receipts"), even if the feature comes from an SDK you don't actively use — the string must still make sense to a user.
   • Native / RN bare: target → Info tab in Xcode (writes Info.plist).
   • Expo: app.json → expo.ios.infoPlist.
   • Flutter: ios/Runner/Info.plist.
3. Bump the build number, rebuild, re-upload. You cannot patch an uploaded build.
4. Audit all SDKs for other required purpose strings now to avoid a second round-trip.