feat(shorebird_cli): generate podspec for iOS framework releases

packages/shorebird_cli/lib/src/commands/release/ios_framework_releaser.dart

@@ -115,6 +115,9 @@
       p.join(targetLibraryDirectory.path, 'ShorebirdFlutter.xcframework'),
     );
 
+    // Generate a podspec so users can integrate via CocoaPods if preferred.
+    _writePodspec(targetLibraryDirectory);
+
     return targetLibraryDirectory;
   }
 
@@ -148,18 +151,44 @@
     ),
   );
 
+  /// Writes a podspec file that wraps the release xcframeworks, enabling
+  /// CocoaPods-based integration as an alternative to manual Xcode embedding.
+  void _writePodspec(Directory releaseDir) {
+    final podspecPath = p.join(
+      releaseDir.path,
+      'ShorebirdFlutter.podspec',
+    );
+    File(podspecPath).writeAsStringSync('''
+Pod::Spec.new do |s|
+  s.name         = 'ShorebirdFlutter'
+  s.version      = '0.0.1'
+  s.summary      = 'Shorebird Flutter framework for add-to-app integration.'
+  s.homepage     = 'https://shorebird.dev'
+  s.license      = { :type => 'Proprietary' }
+  s.author       = 'Shorebird'
+  s.source       = { :path => '.' }
+  s.platform     = :ios, '12.0'
+  s.vendored_frameworks = 'App.xcframework', 'ShorebirdFlutter.xcframework'
+end
+''');
+  }
+
   @override
   String get postReleaseInstructions {
     final relativeFrameworkDirectoryPath = p.relative(releaseDirectory.path);
     return '''
 
 Your next step is to add the .xcframework files found in the ${lightCyan.wrap(relativeFrameworkDirectoryPath)} directory to your iOS app.
 
-To do this:
-    1. Add the relative path to the ${lightCyan.wrap(relativeFrameworkDirectoryPath)} directory to your app's Framework Search Paths in your Xcode build settings.
-    2. Embed the App.xcframework and ShorebirdFlutter.framework in your Xcode project.
+${styleBold.wrap('Option A: CocoaPods')}
+    Add the following to your app's Podfile:
+    ${lightCyan.wrap("pod 'ShorebirdFlutter', :path => '$relativeFrameworkDirectoryPath'")}
+    Then run ${lightCyan.wrap('pod install')}.
 
-Instructions for these steps can be found at https://docs.flutter.dev/add-to-app/ios/project-setup#option-b---embed-frameworks-in-xcode.
+${styleBold.wrap('Option B: Manual Xcode embedding')}
+    1. Add the relative path to the ${lightCyan.wrap(relativeFrameworkDirectoryPath)} directory to your app's Framework Search Paths in your Xcode build settings.
+    2. Embed the App.xcframework and ShorebirdFlutter.xcframework in your Xcode project.
+    Instructions: https://docs.flutter.dev/add-to-app/ios/project-setup#option-b---embed-frameworks-in-xcode
 ''';
   }
 }

packages/shorebird_cli/test/src/commands/release/ios_framework_releaser_test.dart

@@ -479,6 +479,24 @@ void main() {
         verify(() => artifactBuilder.buildIosFramework(args: [])).called(1);
       });
 
+      test('generates podspec in release directory', () async {
+        await runWithOverrides(iosFrameworkReleaser.buildReleaseArtifacts);
+
+        final podspecFile = File(
+          p.join(projectRoot.path, 'release', 'ShorebirdFlutter.podspec'),
+        );
+        expect(podspecFile.existsSync(), isTrue);
+        final content = podspecFile.readAsStringSync();
+        expect(content, contains("s.name         = 'ShorebirdFlutter'"));
+        expect(
+          content,
+          contains(
+            "s.vendored_frameworks = 'App.xcframework', "
+            "'ShorebirdFlutter.xcframework'",
+          ),
+        );
+      });
+
       group('when --obfuscate is passed', () {
         setUp(() {
           when(() => argResults['obfuscate']).thenReturn(true);
@@ -686,18 +704,22 @@ void main() {
         final relativeFrameworkDirectoryPath = p.relative(
           p.join(projectRoot.path, 'release'),
         );
+        final instructions = runWithOverrides(
+          () => iosFrameworkReleaser.postReleaseInstructions,
+        );
+        expect(instructions, contains('Option A: CocoaPods'));
+        expect(instructions, contains('Option B: Manual Xcode embedding'));
         expect(
-          runWithOverrides(() => iosFrameworkReleaser.postReleaseInstructions),
-          equals('''
-
-Your next step is to add the .xcframework files found in the ${lightCyan.wrap(relativeFrameworkDirectoryPath)} directory to your iOS app.
-
-To do this:
-    1. Add the relative path to the ${lightCyan.wrap(relativeFrameworkDirectoryPath)} directory to your app's Framework Search Paths in your Xcode build settings.
-    2. Embed the App.xcframework and ShorebirdFlutter.framework in your Xcode project.
-
-Instructions for these steps can be found at https://docs.flutter.dev/add-to-app/ios/project-setup#option-b---embed-frameworks-in-xcode.
-'''),
+          instructions,
+          contains(
+            "pod 'ShorebirdFlutter', :path => "
+            "'$relativeFrameworkDirectoryPath'",
+          ),
+        );
+        expect(instructions, contains('pod install'));
+        expect(
+          instructions,
+          contains('App.xcframework and ShorebirdFlutter.xcframework'),
         );
       });
     });