docs: add comprehensive project documentation

Add four new comprehensive documentation files and update READMEs:

New Documentation:
- ARCHITECTURE.md: High-level system architecture overview
  * Design philosophy and core principles
  * System components and data flow
  * Multi-agent system details
  * CLI tool integration strategy
  * Session and memory management
  * Performance optimizations and best practices

- CONTRIBUTING.md: Contributor guidelines
  * Code of conduct
  * Development setup instructions
  * Coding standards and best practices
  * Testing guidelines
  * Documentation requirements
  * Pull request process
  * Release process

- FAQ.md: Frequently asked questions
  * General questions about CCW
  * Installation and setup
  * Usage and workflows
  * Commands and syntax
  * Sessions and tasks
  * Agents and tools
  * Memory system
  * Troubleshooting
  * Advanced topics

- EXAMPLES.md: Real-world use cases
  * Quick start examples
  * Web development (Express, React, e-commerce)
  * API development (REST, GraphQL)
  * Testing & quality assurance (TDD, test generation)
  * Refactoring (monolith to microservices)
  * UI/UX design (design systems, landing pages)
  * Bug fixes (simple and complex)
  * Documentation generation
  * DevOps & automation (CI/CD, Docker)
  * Complex projects (chat app, analytics dashboard)

Updated Documentation:
- README.md: Added comprehensive documentation section
  * Organized docs into categories
  * Links to all new documentation files
  * Improved navigation structure

- README_CN.md: Added documentation section (Chinese)
  * Same organization as English version
  * Links to all documentation resources

Benefits:
- Provides clear entry points for new users
- Comprehensive reference for all features
- Real-world examples for practical learning
- Complete contributor onboarding
- Better project discoverability

README.md

@@ -159,11 +159,38 @@ Traditional multi-phase workflow for complex projects:
 
 ---
 
+## 📚 Documentation
+
+CCW provides comprehensive documentation to help you get started and master advanced features:
+
+### 📖 **Getting Started**
+- [**Getting Started Guide**](GETTING_STARTED.md) - 5-minute quick start tutorial
+- [**Installation Guide**](INSTALL.md) - Detailed installation instructions ([中文](INSTALL_CN.md))
+- [**Examples**](EXAMPLES.md) - Real-world use cases and practical examples
+- [**FAQ**](FAQ.md) - Frequently asked questions and troubleshooting
+
+### 🏗️ **Architecture & Design**
+- [**Architecture Overview**](ARCHITECTURE.md) - System design and core components
+- [**Project Introduction**](PROJECT_INTRODUCTION.md) - Detailed project overview (中文)
+- [**Workflow Diagrams**](WORKFLOW_DIAGRAMS.md) - Visual workflow representations
+
+### 📋 **Command Reference**
+- [**Command Reference**](COMMAND_REFERENCE.md) - Complete list of all commands
+- [**Command Specification**](COMMAND_SPEC.md) - Detailed technical specifications
+- [**Command Flow Standard**](COMMAND_FLOW_STANDARD.md) - Command design patterns
+
+### 🤝 **Contributing**
+- [**Contributing Guide**](CONTRIBUTING.md) - How to contribute to CCW
+- [**Changelog**](CHANGELOG.md) - Version history and release notes
+
+---
+
 ## 🤝 Contributing & Support
 
 - **Repository**: [GitHub - Claude-Code-Workflow](https://github.com/catlog22/Claude-Code-Workflow)
 - **Issues**: Report bugs or request features on [GitHub Issues](https://github.com/catlog22/Claude-Code-Workflow/issues).
 - **Discussions**: Join the [Community Forum](https://github.com/catlog22/Claude-Code-Workflow/discussions).
+- **Contributing**: See [CONTRIBUTING.md](CONTRIBUTING.md) for contribution guidelines.
 
 ## 📄 License