Added
- Initial release
- Interactive TUI with speed gauge and real-time graph
- Multiple speed test providers (Cloudflare, LibreSpeed, Custom)
- Download and upload speed testing
- Ping and jitter measurement
- Auto-scaling gauge based on connection speed
- 4 color themes (Dark, Light, Ocean, Neon)
- Test history with automatic saving
- CSV export functionality
- Network diagnostics (DNS, traceroute, interfaces)
- CLI mode with JSON/CSV output
- Cross-platform support (Windows, macOS, Linux)