🚀 BREAKING CHANGE: Complete rewrite to enterprise-grade standards
### ✨ New Features:
- Enhanced input validation (IP, port, username, path)
- Automatic rollback mechanism on failures
- Comprehensive unit testing framework (50+ tests)
- Advanced logging with timestamps and levels
- Interactive configuration system with persistence
- Performance optimization suite (kernel, Docker, Samba)
- Advanced firewall configuration with monitoring
- System health monitoring and maintenance tools
- Multi-distribution support with version validation
### 🛡️ Security Enhancements:
- SSH hardening with security policies
- Rate limiting for critical services
- IP blocking/unblocking tools
- Intrusion detection capabilities
- Firewall monitoring with alerts
- Secure input sanitization
### 🔧 Architecture Improvements:
- Modular library structure
- Centralized configuration management
- Common functions separation
- Professional error handling with set -euo pipefail
- Signal handling for graceful shutdowns
- Resource cleanup mechanisms
### 📚 Documentation:
- Professional README with comprehensive guides
- Enhanced CONTRIBUTING.md with development standards
- Complete CHANGELOG.md with version history
- Troubleshooting guides and best practices
### 🧪 Testing & Quality:
- Unit tests for all critical functions
- Performance regression testing
- Multi-distribution integration testing
- Input validation testing
- Error scenario testing
This release transforms the script from a basic tool to a production-ready,
enterprise-grade NAS setup solution suitable for professional environments.
