Add iOS share extension with rich link previews

- Implement share extension to receive URLs from other apps
- Display shared links with emoji indicator and rich preview cards
- Add custom compact link preview with image, title, and domain
- Configure app groups for data sharing between extension and main app
- Handle URL detection and parsing in share extension
- Update message formatting to show only emoji for shared links
- Add proper entitlements and activation rules for share extension

project.yml

@@ -34,6 +34,9 @@ targets:
           UIColorName: Black
         UISupportedInterfaceOrientations:
           - UIInterfaceOrientationPortrait
+        CFBundleURLTypes:
+          - CFBundleURLSchemes:
+              - bitchat
     settings:
       PRODUCT_BUNDLE_IDENTIFIER: chat.bitchat
       INFOPLIST_FILE: bitchat/Info.plist
@@ -48,6 +51,7 @@ targets:
       ASSETCATALOG_COMPILER_APPICON_NAME: AppIcon
       ASSETCATALOG_COMPILER_INCLUDE_ALL_APPICON_ASSETS: YES
       CODE_SIGN_ENTITLEMENTS: bitchat/bitchat.entitlements
+      DEVELOPMENT_TEAM: L3N5LHJD5Y
     dependencies:
       - target: bitchatShareExtension
         platformFilter: ios
@@ -64,6 +68,14 @@ targets:
         CFBundleDisplayName: bitchat
         CFBundleShortVersionString: $(MARKETING_VERSION)
         CFBundleVersion: $(CURRENT_PROJECT_VERSION)
+        NSExtension:
+          NSExtensionPointIdentifier: com.apple.share-services
+          NSExtensionPrincipalClass: $(PRODUCT_MODULE_NAME).ShareViewController
+          NSExtensionAttributes:
+            NSExtensionActivationRule:
+              NSExtensionActivationSupportsText: true
+              NSExtensionActivationSupportsWebURLWithMaxCount: 1
+              NSExtensionActivationSupportsImageWithMaxCount: 1
     settings:
       PRODUCT_BUNDLE_IDENTIFIER: chat.bitchat.ShareExtension
       INFOPLIST_FILE: bitchatShareExtension/Info.plist
@@ -73,6 +85,7 @@ targets:
       CODE_SIGNING_REQUIRED: YES
       CODE_SIGNING_ALLOWED: YES
       CODE_SIGN_ENTITLEMENTS: bitchatShareExtension/bitchatShareExtension.entitlements
+      DEVELOPMENT_TEAM: L3N5LHJD5Y
 
   bitchatTests_iOS:
     type: bundle.unit-test