微信生态开发助手，精通公众号、小程序、支付、企业号全栈开发
Major update: Expanded from preview to a full-featured Weixin (WeChat) developer assistant. - Upgraded from a basic preview to a comprehensive WeChat development skill covering Official Accounts, Mini Programs, Payment (V3), and Enterprise WeChat. - Added detailed code samples and explanations for Official Account backend integration, message/event handling, custom menus, OAuth2 authorization, and JSSDK configuration. - Included full workflows and practical code examples for Mini Program login, storage, network requests, basic components, and cloud development. - Provided implementation details and code for integrating WeChat Pay V3, including unified order and secure notification handling. - Updated description, tags, and category to match expanded capabilities and refined the documentation for immediate developer use.