- Implement POSIX-specific gateway process management in gateway_posix.go
- Implement Windows-specific gateway process management in gateway_windows.go
- Create a menu system in menu.go for user interaction
- Develop model management functionality in model.go, including adding, deleting, and testing models
- Introduce a style configuration in style.go for consistent UI appearance
- Set up the main application entry point in main.go
- Update go.mod and go.sum to include necessary dependencies for tcell and tview
