docs: highlight AI-powered development in README

Add Claude Code plugin as a key feature in the "Why JEngine?" section
for both English and Chinese README files.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Signed-off-by: JasonXuDeveloper - 傑 <jason@xgamedev.net>

Author: JasonXuDeveloper

README.md

@@ -18,6 +18,7 @@
 - **Zero/Minimal GC** - UniTask (GC-free async) + Nino (high-performance serialization)
 - **All Platforms** - iOS, Android, Windows, macOS, WebGL, WeChat, Douyin, Alipay, TapTap
 - **Secure Updates** - Obfuscate hot update DLL + encrypt resources (assets & DLL/PDB) with XOR/AES/ChaCha20
+- **AI-Powered Development** - [Claude Code plugin](claude-plugin/) enables AI agents to automatically suggest JEngine APIs and patterns
 - **Commercial Ready** - Production-proven by individuals and enterprise teams
 
 ## Overview

README_zh_cn.md

@@ -18,6 +18,7 @@
 - **零/极低GC** - UniTask（无GC异步）+ Nino（高性能序列化）
 - **全平台支持** - iOS、Android、Windows、macOS、WebGL、微信、抖音、支付宝、TapTap
 - **安全更新** - 热更DLL混淆 + 资源（资产和DLL/PDB）支持XOR/AES/ChaCha20加密
+- **AI辅助开发** - [Claude Code插件](claude-plugin/)让AI自动推荐JEngine的API和最佳实践
 - **商用验证** - 经个人和企业团队生产环境验证
 
 ## 概述