release: Detect if DLL is loadable or not.

Author: Aetopia

src/Flarial.Launcher.Runtime/Client/FlarialClient.cs

@@ -41,7 +41,11 @@ public bool Launch(bool initialized)
             }
             return false;
         }
-        return Injector.Launch(initialized, new(FileName)) is { };
+
+        Library library = new(FileName);
+        if (!library.IsLoadable) return false;
+        
+        return Injector.Launch(initialized, library) is { };
     }
 
     static readonly object _lock = new();

src/Flarial.Launcher/Interface/Dialogs/ClientInjectionFailureDialog.cs

@@ -0,0 +1,13 @@
+namespace Flarial.Launcher.Interface.Dialogs;
+
+sealed class ClientInjectionFailureDialog : MainDialog
+{
+    protected override string PrimaryButtonText => "Back";
+    protected override string Title => "⚠️ Client Injection Failure";
+    protected override string Content => @"The launcher couldn't inject the client into the game.
+    
+• Ensure no security software is blocking the launcher & client.
+• Add the launcher & client as exclusions in installed security software.
+
+If you need help, join our Discord.";
+}

src/Flarial.Launcher/Interface/MainDialog.cs

@@ -49,5 +49,6 @@ internal async Task<ContentDialogResult> PromptAsync()
     internal static UnpackagedInstallDialog UnpackagedInstall => field ??= new();
     internal static ClientUpdateFailureDialog ClientUpdateFailure => field ??= new();
     internal static GamingServicesMissingDialog GamingServicesMissing => field ??= new();
+    internal static ClientInjectionFailureDialog ClientInjectionFailure => field ??= new();
     internal static LauncherUpdateAvailableDialog LauncherUpdateAvailable => field ??= new();
 }

src/Flarial.Launcher/Pages/HomePage.cs

@@ -177,10 +177,15 @@ async void OnButtonClick(object sender, RoutedEventArgs args)
             }
 
             _button.Content = "Launching...";
-            if (!await Task.Run(() => FlarialClient.Current.Launch(initialized)))
+            switch (await Task.Run(() => FlarialClient.Current.Launch(initialized)))
             {
-                await MainDialog.LaunchFailure.ShowAsync();
-                return;
+                case false:
+                    await MainDialog.LaunchFailure.ShowAsync();
+                    break;
+
+                case null:
+                    await MainDialog.ClientInjectionFailure.ShowAsync();
+                    break;
             }
         }
         finally