dotnet-accessibility Cross-platform accessibility patterns for .NET UI frameworks: semantic markup, keyboard navigation, focus management, color contrast, and screen reader integration. In-depth coverage for Blazor (HTML ARIA), MAUI (SemanticProperties), and WinUI (AutomationProperties / UI Automation). Brief guidance with cross-references for WPF, Uno Platform, and TUI frameworks. Scope boundary: This skill owns cross-cutting accessibility principles and per-framework accessibility APIs. Framework-specific development patterns (project setup, MVVM, routing, deployment) are owned by the respe…