🐛 Fixes #

• Fix parameter name inconsistency

🐛 Fixes #

• Fixed method channel naming consistency

✨ Improvements #

• Added automatic StoreKit 2 initialization guard
• Improved subscription status handling
• Optimized transaction restore logic
• Improved error propagation from iOS to Flutter

🐛 Fixes #

• Fixed concurrent initialization issue
• Fixed restorePurchases returning null list
• Fixed method channel naming consistency

新增 #

• StoreKit 2 基础功能集成
• 产品获取和购买功能
• 订阅管理支持
• 购买恢复机制
• 完整的错误处理
• Flutter 插件接口

技术特性 #

• 支持 iOS 15.0+
• 类型安全的数据模型
• 完整的异步操作支持