Add language switcher to README documentation

- Added language switcher buttons at the top of both README files
- English README displays: Languages: [English](README.md) | [中文](README_CN.md)
- Chinese README displays: 语言: [English](README.md) | [中文](README_CN.md)
- Positioned switcher in right-aligned div for clean header layout
- Enhanced user experience for multilingual documentation access

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -1,5 +1,11 @@
 # Claude Code Workflow (CCW)
 
+<div align="right">
+
+**Languages:** [English](README.md) | [中文](README_CN.md)
+
+</div>
+
 A sophisticated multi-agent automation workflow framework that transforms complex software development tasks from conceptualization to implementation review into manageable, trackable, AI-orchestrated processes.
 
 ## 🏗️ Architecture Overview

README_CN.md

@@ -1,5 +1,11 @@
 # Claude Code Workflow (CCW)
 
+<div align="right">
+
+**语言:** [English](README.md) | [中文](README_CN.md)
+
+</div>
+
 一个精密的多智能体自动化工作流框架，将复杂的软件开发任务从概念构思到实现审查转化为可管理、可追踪、AI协调的流程。
 
 ## 🏗️ 架构概览