Windows

Use MVVM with [CommunityToolkit.Mvvm](https://learn.microsoft.com/en-us/dotnet/communitytoolkit/mvvm/) — source-gener...

- Use `d:DataContext` and `d:DesignInstance` for XAML designer preview data

Use built-in WinUI 3 controls — they implement Fluent 2 natively. Never custom-draw what a standard control can do.

XAML layout uses effective pixels (epx) — scaling is automatic for all XAML-rendered content.

- Use the single-project MSIX packaging model

WinUI 3 supports tri-state theming: Light, Dark, and High Contrast.