📝 docs(env): add development environment documentation

- document development environment specifications including container environment and services
- list versions for Node.js, MySQL, Redis and MinIO
- note default database, storage bucket and port configuration
- add Claude Code specific instructions

CLAUDE.md

@@ -0,0 +1,12 @@
+### 开发环境说明
+- 多八多云端开发容器环境
+- Node.js 20.18.3
+- MySQL 8.0.36 (默认数据库: d8dai)
+- Redis 7
+- MinIO(默认存储桶: d8dai)
+- 所有服务使用默认参数连接，正式环境参数相同
+- 默认开放8080端口供外网访问
+- 
+- ### Claude Code
+- bmad-core dir is in .bmad-core
+- Always response in Chinese