ensure proper disposal of objects

Program.cs

@@ -10,14 +10,16 @@ using Serilog.Events;
 var resetEvent = new ManualResetEvent(false);
 using var tokenSource = new CancellationTokenSource();
 
-Console.CancelKeyPress += (sender, eventArgs) =>
+Console.CancelKeyPress += (_, eventArgs) =>
 {
-    resetEvent?.Set();
-    tokenSource?.Cancel();
+    Log.Debug("Canceling with CancelKeyPress");
+    Dispose();
     eventArgs.Cancel = true;
     Log.CloseAndFlush();
 };
 
+AppDomain.CurrentDomain.ProcessExit += (_, _) => Dispose();
+
 SetupLogging();
 
 var config = LoadConfig();
@@ -30,6 +32,13 @@ resetEvent.WaitOne();
 
 return;
 
+void Dispose()
+{
+    resetEvent?.Set();
+    tokenSource?.Cancel();
+    Log.CloseAndFlush();
+}
+
 static void SetupLogging()
 {
     var minLevel = (Environment.GetEnvironmentVariable("LOG_LEVEL") ?? "info").ToUpperInvariant() switch