Remote: Ctrl+C Handling im PS-Script + /remote Alias

- CancelKeyPress-Event registrieren → .Cancel() → ReceiveAsync bricht sauber ab
- catch [AggregateException] für CancellationToken in .GetAwaiter().GetResult()
- Event-Handler im finally-Block entfernen
- /remote als Alias für /remote.ps1

wwwroot/remote.ps1

@@ -51,6 +51,15 @@ try {
     $cts = New-Object System.Threading.CancellationTokenSource
     $ct = $cts.Token
 
+    # Ctrl+C abfangen → CancellationToken ausloesen
+    [Console]::TreatControlCAsInput = $false
+    $cancelHandler = [System.ConsoleCancelEventHandler]{
+        param($s, $e)
+        $e.Cancel = $true
+        $cts.Cancel()
+    }
+    [Console]::add_CancelKeyPress($cancelHandler)
+
     # TLS 1.2 erzwingen (fuer aeltere Windows-Versionen)
     [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12
 
@@ -152,11 +161,16 @@ try {
     }
 } catch [System.OperationCanceledException] {
     # Ctrl+C
+} catch [System.AggregateException] {
+    # Kann durch CancellationToken in .GetAwaiter().GetResult() kommen
 } catch [System.Net.WebSockets.WebSocketException] {
     Write-Host "  Verbindung verloren." -ForegroundColor Red
 } catch {
     Write-Host "  Fehler: $_" -ForegroundColor Red
 } finally {
+    # Event-Handler entfernen
+    try { [Console]::remove_CancelKeyPress($cancelHandler) } catch { }
+
     if ($ws -and $ws.State -eq [System.Net.WebSockets.WebSocketState]::Open) {
         try {
             $closeCt = (New-Object System.Threading.CancellationTokenSource(3000)).Token