development-plugin-for-avalonia

Repo-local umbrella skill for building, reviewing, designing, porting, and migrating Avalonia applications with modern XAML/C# patterns on Avalonia 11.3.12. Use when working inside this repository and the request is broad Avalonia work; route quickly to the focused plugin skills for startup, bindings, styling, controls, layout, rendering, testing, design systems, or HTML/WinForms/WPF/WinUI/Avalonia 12 migration work.