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/Loader/FileLoader.php

@@ -0,0 +1,57 @@
+<?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\Loader;
+
+use Symfony\Component\Config\Resource\FileResource;
+use Symfony\Component\Translation\Exception\InvalidResourceException;
+use Symfony\Component\Translation\Exception\NotFoundResourceException;
+use Symfony\Component\Translation\MessageCatalogue;
+
+/**
+ * @author Abdellatif Ait boudad <a.aitboudad@gmail.com>
+ */
+abstract class FileLoader extends ArrayLoader
+{
+    public function load(mixed $resource, string $locale, string $domain = 'messages'): MessageCatalogue
+    {
+        if (!stream_is_local($resource)) {
+            throw new InvalidResourceException(\sprintf('This is not a local file "%s".', $resource));
+        }
+
+        if (!file_exists($resource)) {
+            throw new NotFoundResourceException(\sprintf('File "%s" not found.', $resource));
+        }
+
+        $messages = $this->loadResource($resource);
+
+        // empty resource
+        $messages ??= [];
+
+        // not an array
+        if (!\is_array($messages)) {
+            throw new InvalidResourceException(\sprintf('Unable to load file "%s".', $resource));
+        }
+
+        $catalogue = parent::load($messages, $locale, $domain);
+
+        if (class_exists(FileResource::class)) {
+            $catalogue->addResource(new FileResource($resource));
+        }
+
+        return $catalogue;
+    }
+
+    /**
+     * @throws InvalidResourceException if stream content has an invalid format
+     */
+    abstract protected function loadResource(string $resource): array;
+}