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.Controls;
+using DashCaddy.Desktop.ViewModels;
+using DashCaddy.Desktop.Services;
+
+namespace DashCaddy.Desktop;
+
+public sealed partial class TemplatesDialog : ContentDialog
+{
+    public MainViewModel ViewModel { get; }
+
+    public TemplatesDialog(MainViewModel viewModel)
+    {
+        ViewModel = viewModel;
+        InitializeComponent();
+    }
+
+    private void AddTemplate_Click(object sender, RoutedEventArgs e)
+    {
+        if (sender is Button btn && btn.Tag is ServiceTemplate template)
+        {
+            var variables = new Dictionary<string, string>();
+            foreach (var (key, value) in template.Environment)
+            {
+                variables[key] = value;
+            }
+            
+            ViewModel.SelectedTemplate = template;
+            ViewModel.TemplateVariablesDict = variables;
+            Hide();
+        }
+    }
+}