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/http-kernel/Attribute/WithLogLevel.php

@@ -0,0 +1,33 @@
+<?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\HttpKernel\Attribute;
+
+use Psr\Log\LogLevel;
+
+/**
+ * Defines the log level applied to an exception.
+ *
+ * @author Dejan Angelov <angelovdejan@protonmail.com>
+ */
+#[\Attribute(\Attribute::TARGET_CLASS)]
+final class WithLogLevel
+{
+    /**
+     * @param LogLevel::* $level The level to use to log the exception
+     */
+    public function __construct(public readonly string $level)
+    {
+        if (!\defined('Psr\Log\LogLevel::'.strtoupper($this->level))) {
+            throw new \InvalidArgumentException(\sprintf('Invalid log level "%s".', $this->level));
+        }
+    }
+}