Добавлено закрытие приложения

ReleaseUpdater/ReleaseUpdaterFacade.cs

@@ -72,7 +72,7 @@ public static class ReleaseUpdaterFacade
     /// Обновление через внешний Updater.exe.
     /// </summary>
     public static async Task UpdateWithExternalAsync(
-        string apiUrl, string? token, string installPath, string appExe, string versionOrLatest = "latest", string? updaterExePath = null)
+        string apiUrl, string? token, string installPath, string appExe, string versionOrLatest = "latest", string? updaterExePath = null, bool exitCurrentApp = false)
     {
         try
         {
@@ -99,6 +99,8 @@ public static class ReleaseUpdaterFacade
                 WorkingDirectory = AppDomain.CurrentDomain.BaseDirectory
             });
 
+            if (exitCurrentApp) { Environment.Exit(0); }
+
             process?.WaitForExit();
 
             if (process?.ExitCode == 0)