drop rn old arch support on android

Author: elio-wrtn

CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+React Native CodePush is a native module that enables over-the-air updates for React Native apps. It consists of native implementations for iOS (Objective-C), Android (Java), and Windows (C++), unified through a JavaScript bridge layer.
+
+## Development Commands
+
+### Testing
+- `npm test` - Run all tests with TypeScript compilation
+- `npm run test:android` - Run Android-specific tests
+- `npm run test:ios` - Run iOS-specific tests  
+- `npm run test:setup-android` - Set up Android emulator for testing
+- `npm run test:setup-ios` - Set up iOS simulator for testing
+
+### Build
+- `npm run build` - Build TypeScript tests to bin/ directory
+- `npm run tsc` - TypeScript compilation
+
+### Platform Testing
+- Tests run on actual emulators/simulators with real React Native apps
+- Test apps are created dynamically in `test/` directory
+- Both old and new React Native architecture testing supported
+
+## Architecture
+
+### Core Components
+- **JavaScript Bridge** (`CodePush.js`): Main API layer exposing update methods
+- **Native Modules**: Platform-specific implementations handling file operations, bundle management
+- **Update Manager**: Handles download, installation, and rollback logic
+- **Acquisition SDK**: Manages server communication and update metadata
+
+### Platform Structure
+- **iOS**: `ios/` - Objective-C implementation with CocoaPods integration
+- **Android**: `android/` - Java implementation with Gradle plugin
+- **Windows**: `windows/` - C++ implementation for Windows React Native
+- **JavaScript**: Root level - TypeScript definitions and bridge code
+
+### Key Patterns
+- **Higher-Order Component**: `codePush()` wrapper for automatic update management
+- **Promise-based Native Bridge**: All native operations return promises
+- **Platform Abstraction**: Unified JavaScript API with platform-specific implementations
+- **Error Handling**: Automatic rollback on failed updates with telemetry
+
+### Testing Framework
+- **Custom Test Runner**: TypeScript-based test framework in `test/`
+- **Emulator Management**: Automated setup and teardown of test environments
+- **Real App Testing**: Creates actual React Native apps for integration testing
+- **Scenario Testing**: Update, rollback, and error scenarios
+
+### Build Integration
+- **Android Gradle Plugin**: Automatically generates bundle hashes and processes assets
+- **iOS CocoaPods**: Manages native dependencies and build configuration
+- **Bundle Processing**: Automated zip creation and hash calculation for OTA updates
+
+## Development Workflow
+
+1. **Making Changes**: Edit native code or JavaScript bridge
+2. **Testing**: Run platform-specific tests with real emulators
+3. **Integration**: Test with actual React Native apps via test framework
+4. **Validation**: Ensure compatibility with both RN architectures
+
+## Key Files
+- `CodePush.js` - Main JavaScript API
+- `test/TestRunner.ts` - Test framework entry point
+- `android/build.gradle` - Android build configuration
+- `ios/CodePush.podspec` - iOS CocoaPods specification
+- `plugin.xml` - Cordova plugin configuration
+
+## Special Considerations
+- Native module requires platform-specific knowledge (iOS/Android/Windows)
+- Testing requires emulator setup and can be time-intensive
+- Updates must be backward compatible with existing app installations
+- Bundle hash calculation is critical for update integrity