winui3

Imported from github/awesome-copilot (MIT, commit 613efc8). This instruction was written by its upstream contributors and has not been reviewed by AI Development Hub. See the bundled LICENSE.

WinUI 3 and Windows App SDK coding guidelines. Prevents common UWP API misuse, enforces correct XAML namespaces, threading, windowing, and MVVM patterns for desktop Windows apps.

Scope: **/*.xaml, **/*.cs, **/*.csproj