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/translation/Extractor/ChainExtractor.php

@@ -0,0 +1,51 @@
+<?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\Translation\Extractor;
+
+use Symfony\Component\Translation\MessageCatalogue;
+
+/**
+ * ChainExtractor extracts translation messages from template files.
+ *
+ * @author Michel Salib <michelsalib@hotmail.com>
+ */
+class ChainExtractor implements ExtractorInterface
+{
+    /**
+     * The extractors.
+     *
+     * @var ExtractorInterface[]
+     */
+    private array $extractors = [];
+
+    /**
+     * Adds a loader to the translation extractor.
+     */
+    public function addExtractor(string $format, ExtractorInterface $extractor): void
+    {
+        $this->extractors[$format] = $extractor;
+    }
+
+    public function setPrefix(string $prefix): void
+    {
+        foreach ($this->extractors as $extractor) {
+            $extractor->setPrefix($prefix);
+        }
+    }
+
+    public function extract(string|iterable $directory, MessageCatalogue $catalogue): void
+    {
+        foreach ($this->extractors as $extractor) {
+            $extractor->extract($directory, $catalogue);
+        }
+    }
+}