Major Documentation Updates:
- Enhanced README.md with complete setup guide and feature overview
- Updated CATALOG.md with comprehensive API endpoints and database schema
- Added unified service management instructions
- Included CI/CD pipeline documentation
- Added troubleshooting and monitoring guides
- Updated project structure and configuration details
- Added Thai language support documentation

Key Improvements:
- Step-by-step quick start guide
- Comprehensive API usage examples
- Database schema documentation
- Service management commands
- Security and authentication details
- Development workflow documentation
- Monitoring and logging information

Files Updated:
- README.md: Complete rewrite with modern structure
- CATALOG.md: Enhanced with new features and endpoints