docs: update documentation for v5.0 release - "Less is More"

Major documentation updates reflecting v5.0 core philosophy:

**Version Updates:**
- Update all docs to v5.0.0
- Remove MCP code-index dependency references
- Emphasize simplified, dependency-free architecture

**Removed Features:**
- Remove /workflow:concept-clarify command (deprecated)
- Clean up all concept clarification workflow documentation

**Command Corrections:**
- Fix memory command names: /update-memory-* → /memory:update-*
- Clarify test workflow execution pattern (generate → execute)

**Dependency Clarifications:**
- Replace "MCP code-index" with "ripgrep/find" in memory:load
- Clarify MCP Chrome DevTools usage in UI design workflows
- Update ui-design:capture to show multi-tier fallback strategy

**Files Updated:**
- README_CN.md - v5.0 version badge and core improvements
- COMMAND_REFERENCE.md - Remove deprecated commands, update descriptions
- COMMAND_SPEC.md - v5.0 version, clarify implementations
- GETTING_STARTED.md - v5.0 features, fix command names
- GETTING_STARTED_CN.md - v5.0 features (Chinese), fix command names
- INSTALL_CN.md - v5.0 simplified installation notes

🎯 Core Philosophy: Simplify dependencies, focus on core features,
improve stability with standard tools.

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

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

README_CN.md

@@ -2,10 +2,9 @@
 
 <div align="center">
 
-[![Version](https://img.shields.io/badge/version-v4.6.2-blue.svg)](https://github.com/catlog22/Claude-Code-Workflow/releases)
+[![Version](https://img.shields.io/badge/version-v5.0.0-blue.svg)](https://github.com/catlog22/Claude-Code-Workflow/releases)
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE)
 [![Platform](https://img.shields.io/badge/platform-Windows%20%7C%20Linux%20%7C%20macOS-lightgrey.svg)]()
-[![MCP Tools](https://img.shields.io/badge/🔧_MCP_Tools-Experimental-orange.svg)](https://github.com/modelcontextprotocol)
 
 **语言:** [English](README.md) | [中文](README_CN.md)
 
@@ -15,7 +14,14 @@
 
 **Claude Code Workflow (CCW)** 将 AI 开发从简单的提示词链接转变为一个强大的、上下文优先的编排系统。它通过结构化规划、确定性执行和智能多模型编排，解决了执行不确定性和误差累积的问题。
 
-> **🎉 最新版本: v4.6.2** - 文档优化与 `/memory:load` 命令改进。详见 [CHANGELOG.md](CHANGELOG.md)。
+> **🎉 版本 5.0: 少即是多**
+>
+> **核心改进**:
+> - ✅ **移除外部依赖** - 使用标准 ripgrep/find 替代 MCP code-index，提升稳定性
+> - ✅ **简化工作流** - 优化 TDD 流程，引入冲突解决机制
+> - ✅ **专注角色分析** - 以角色文档为核心，简化规划架构
+>
+> 详见 [CHANGELOG.md](CHANGELOG.md)。
 
 > 📚 **第一次使用 CCW？** 查看 [**快速上手指南**](GETTING_STARTED_CN.md) 获取新手友好的 5 分钟教程！