Created missing asset catalog required by Xcode build:
Assets.xcassets:
- Created asset catalog directory structure
- Added Contents.json with standard Xcode format
- Added AppIcon.appiconset with minimal icon configuration
AppIcon.appiconset:
- Minimal icon set configuration for iOS
- Universal platform support
- 1024x1024 size placeholder (actual icons can be added later)
Fixes:
- Build error: 'None of the input catalogs contained a matching app icon set named AppIcon'
- Build error: 'Failed to read file attributes for Assets.xcassets'
- Xcode project expects this asset catalog for app icons
Result: Build should now complete successfully