maui-theming

# .NET MAUI Theming Apply light/dark mode support, custom branded themes, and runtime theme switching in .NET MAUI apps using AppThemeBinding, ResourceDictionary swapping, and system theme detection APIs. ## When to Use - Adding light and dark mode support to a .NET MAUI app - Creating custom branded themes with ResourceDictionary - Detecting and responding to system theme changes at runtime - Letting users choose a preferred theme (light, dark, or system default) - Combining OS-driven theme response with custom color palettes ## When Not to Use - Localization or language switching — see [.NET MAUI localization docs](https://learn.microsoft.com/dotnet/maui/fundamentals/localization) - Accessibility-specific visual adjustments — see [.NET MAUI accessibility docs](https://learn.microsoft.com/dotnet/maui/fundamentals/accessibility) - App icon or splash screen configuration — see [.NET MAUI app icon docs](https://learn.microsoft.com/dotnet/maui/user-interface/images/app-icons) - Bootstrap-style class theming — see the `Plugin.Maui.BootstrapTheme` NuGet package ## Inputs - A .NET MAUI project targeting .NET 8 or later - XAML pages or C# UI code that need theme-aware styling ## Workflow 1. Detect the current theme approach in the project (AppThemeBinding, ResourceDictionary, or none). 2. Choose the appropriate strategy: AppThemeBinding for simple light/dark, ResourceDictionary swap for custom/multiple themes, or both combined. 3. Define theme resources — inline `AppThemeBi...