Stand: SMTP-Test, Admin-Mail-Tab, Notifiable-Fix, Lazy-Quill

- Fix: Notifiable-Trait zum User-Model hinzugefuegt (behebt notify()-500er)
- Installer: SMTP-Verbindungstest mit EsmtpTransport + Ueberspringen-Link
- Admin: Neuer E-Mail-Tab mit SMTP-Konfiguration + Verbindungstest
- Admin: Lazy Quill-Initialisierung (nur sichtbare Locale wird geladen)
- Uebersetzungen: 17 neue Mail-Keys in allen 6 Sprachen

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vendor/symfony/console/Event/ConsoleCommandEvent.php

@@ -0,0 +1,54 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Console\Event;
+
+/**
+ * Allows to do things before the command is executed, like skipping the command or executing code before the command is
+ * going to be executed.
+ *
+ * Changing the input arguments will have no effect.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+final class ConsoleCommandEvent extends ConsoleEvent
+{
+    /**
+     * The return code for skipped commands, this will also be passed into the terminate event.
+     */
+    public const RETURN_CODE_DISABLED = 113;
+
+    /**
+     * Indicates if the command should be run or skipped.
+     */
+    private bool $commandShouldRun = true;
+
+    /**
+     * Disables the command, so it won't be run.
+     */
+    public function disableCommand(): bool
+    {
+        return $this->commandShouldRun = false;
+    }
+
+    public function enableCommand(): bool
+    {
+        return $this->commandShouldRun = true;
+    }
+
+    /**
+     * Returns true if the command is runnable, false otherwise.
+     */
+    public function commandShouldRun(): bool
+    {
+        return $this->commandShouldRun;
+    }
+}