🔧 Code Quality Fixes

• Removed duplicate Discord token saving code (Form1.cs:95)
• Added comprehensive input validation for IP addresses and user inputs
• Extracted magic numbers to constants (DEFAULT_SWITCH_PORT, PING_TIMEOUT_MS, etc.)
• Improved error handling throughout all major functions

🛡️ Security & Reliability

• Enhanced IP address validation with proper IPv4 format checking
• Added try-catch blocks around all network operations
• Implemented proper resource disposal using using statements for Ping objects
• Added connection cleanup in finally blocks to prevent resource leaks

⚡ Performance & Maintainability

• Replaced magic numbers with named constants for better maintainability
• Added null/empty checks to prevent crashes
• Improved async/await patterns with proper cancellation token usage
• Added detailed error logging for better debugging

🔄 Project Structure Changes

• Converted to SDK-style project format with modern
• Removed legacy files: App.config, packages.config (no longer needed)
• Updated target framework to net9.0-windows

📦 Dependency Updates

• Discord.Net: Updated from 3.12.0 → 3.16.0
• LibUsbDotNet: Updated to 3.0.167-alpha (latest compatible version)
• NLog: Updated from 5.1.3 → 5.3.4
• Removed redundant packages that are now included in .NET 9.0

💻 Code Modernization

• Added nullable reference types support (enable)
• Enabled implicit usings for cleaner code
• Fixed namespace conflicts with proper global:: qualifiers
• Added designer serialization attributes for custom controls
• Maintained backward compatibility with existing functionality

⚡ Benefits of .NET 9.0 Upgrade

• Better performance with latest runtime optimizations
• Modern C# language features support
• Enhanced security and bug fixes
• Better cross-platform compatibility
• Simplified project management with SDK-style format