wip: Windows desktop app scaffold (WinUI 3/.NET 8) + NSIS installer + docs

Owner decision pending (STATE.md DC-100 tick): adopt/ship/park. Preserved from fragile git stash to named branch 2026-08-23. NOTE: requires a Windows build machine (WinUI XAML compiler + MSIX do not cross-build on Linux) — see WINDOWS_APP_BUILD.md in this tree. Secret-scanned clean 2026-08-23 (no keys/tokens/PEM in tree).
2026-08-22 23:50:34 -07:00
commit 86e4c9fc81
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+using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Data;
+using Microsoft.UI;
+using DashCaddy.Desktop.ViewModels;
+using Windows.UI;
+
+namespace DashCaddy.Desktop.ViewModels;
+
+public class StatusToColorConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object parameter, string language)
+    {
+        if (value is ServiceHealth health)
+        {
+            return health switch
+            {
+                ServiceHealth.Healthy => new SolidColorBrush(Colors.LimeGreen),
+                ServiceHealth.Degraded => new SolidColorBrush(Colors.Gold),
+                ServiceHealth.Unhealthy => new SolidColorBrush(Colors.Red),
+                _ => new SolidColorBrush(Colors.Gray)
+            };
+        }
+        if (value is bool boolVal)
+        {
+            return boolVal ? new SolidColorBrush(Colors.LimeGreen) : new SolidColorBrush(Colors.Red);
+        }
+        return new SolidColorBrush(Colors.Gray);
+    }
+
+    public object ConvertBack(object value, Type targetType, object parameter, string language)
+        => throw new NotImplementedException();
+}
+
+public class StatusToTextConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object parameter, string language)
+    {
+        if (value is ServiceHealth health)
+        {
+            return health switch
+            {
+                ServiceHealth.Healthy => "Healthy",
+                ServiceHealth.Degraded => "Degraded",
+                ServiceHealth.Unhealthy => "Unhealthy",
+                _ => "Unknown"
+            };
+        }
+        return "Unknown";
+    }
+
+    public object ConvertBack(object value, Type targetType, object parameter, string language)
+        => throw new NotImplementedException();
+}
+
+public class BoolToVisibilityConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object parameter, string language)
+    {
+        if (value is bool boolVal)
+        {
+            return boolVal ? Visibility.Visible : Visibility.Collapsed;
+        }
+        return Visibility.Collapsed;
+    }
+
+    public object ConvertBack(object value, Type targetType, object parameter, string language)
+        => throw new NotImplementedException();
+}
+
+public class InverseBoolConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object parameter, string language)
+    {
+        if (value is bool boolVal)
+            return !boolVal;
+        return true;
+    }
+
+    public object ConvertBack(object value, Type targetType, object parameter, string language)
+        => throw new NotImplementedException();
+}