Modernize app for new iOS versions

[Copilot]

App targets iOS 8 and uses APIs removed in modern iOS (UIWebView removed in iOS 14.5, Twitter/Social frameworks deprecated). Cannot build or submit to App Store.

UIWebView → WKWebView

CountryInfoWebView changed from UIWebView subclass to UIView with an internal WKWebView (composition). Direct subclassing won't work—+layerClass override for CAGradientLayer conflicts with WKWebView internals.

@interface CountryInfoWebView : UIView
@property (nonatomic, readonly) UIScrollView *scrollView;
- (void)loadHTMLString:(NSString *)string baseURL:(NSURL *)baseURL;
@end

Both storyboards updated: <webView> → <view customClass="CountryInfoWebView">.

Frameworks

• Added: WebKit.framework
• Removed: Twitter.framework, Social.framework (8 pbxproj references)

Deployment target: 8.0 → 13.0

• project.pbxproj (4 locations), Podfile

Dead code removal

• SYSTEM_VERSION_LESS_THAN macro and all iOS 7 branches in AppDelegate, TopBarView, CountryInfoViewController_iPhone
• Twitter.h import and runtime NSClassFromString check in sharing category

Info.plist

• Removed CFBundleSignature, UIPrerenderedIcon
• armv7 → arm64 in UIRequiredDeviceCapabilities
• Added UILaunchStoryboardName

LaunchScreen.storyboard

Replaces legacy Default*.png launch images. Removed ASSETCATALOG_COMPILER_LAUNCHIMAGE_NAME from build settings.

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