[SUPERSEDED] Mixed SCL/onboarding trial — replaced by protocol-only PR #310

App.xaml.cs

@@ -6,6 +6,7 @@
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Threading;
+using ArIED61850Tester.Services;
 
 namespace ArIED61850Tester;
 
@@ -22,6 +23,20 @@ protected override void OnStartup(StartupEventArgs e)
         WindowsApplicationIdentity.Apply();
         base.OnStartup(e);
 
+        if (SclSafeTrialCommand.IsRequested(e.Args))
+        {
+            var trial = SclSafeTrialRunner.RunAsync(e.Args, CancellationToken.None)
+                .GetAwaiter()
+                .GetResult();
+            MessageBox.Show(
+                $"{trial.Message}\n\nEvidence: {trial.EvidencePath}",
+                trial.IsSuccess ? "SCL Safe Trial — PASS" : "SCL Safe Trial — NOT PROVEN",
+                MessageBoxButton.OK,
+                trial.IsSuccess ? MessageBoxImage.Information : MessageBoxImage.Warning);
+            Shutdown(trial.ExitCode);
+            return;
+        }
+
         // P2 installs one calm industrial visual system before StartupUri materializes.
         // Existing XAML keeps its semantic resource keys while the overlay replaces
         // glare-heavy white/blue surfaces with Blue Steel + Light Greige equivalents.
@@ -64,6 +79,12 @@ protected override void OnActivated(EventArgs e)
         // tiny P2 adapter when windows activate so newly opened FAT workspaces also
         // inherit the selected industrial theme without touching engine workflows.
         P2BlueSteelGreigeUx.ApplyToOpenWindows(this);
+
+        // Keep IED onboarding task-first without replacing the existing protocol owners:
+        // Add IED offers SCL-first or live-IP discovery, and bulk connect is surfaced only
+        // when more than one loaded IED makes the action useful.
+        if (Current?.MainWindow is MainWindow mainWindow)
+            SmartIedOnboardingBehavior.Install(mainWindow);
     }
 
     private void InstallP2BlueSteelGreigeTheme()

Services/Iec61850ConnectionPathPolicy.cs

@@ -0,0 +1,29 @@
+using ArIED61850Tester.Models;
+
+namespace ArIED61850Tester.Services;
+
+public enum Iec61850ConnectionPath
+{
+    FullDiscovery,
+    CachedLiveModel,
+    SclAssisted
+}
+
+/// <summary>
+/// Pure routing policy. SCL design authority is distinct from a saved live-discovery
+/// cache: Play/Connect uses the SCL-assisted path, while Re-scan remains an explicit
+/// caller of full discovery.
+/// </summary>
+public static class Iec61850ConnectionPathPolicy
+{
+    public static Iec61850ConnectionPath SelectForFastConnect(Iec61850MonitorDevice device)
+    {
+        ArgumentNullException.ThrowIfNull(device);
+
+        if (device.HasSclDesignModel)
+            return Iec61850ConnectionPath.SclAssisted;
+        if (device.HasDiscoveryCache && device.Signals.Count > 0)
+            return Iec61850ConnectionPath.CachedLiveModel;
+        return Iec61850ConnectionPath.FullDiscovery;
+    }
+}