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/sebastian/comparator/src/SplObjectStorageComparator.php

@@ -0,0 +1,57 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of sebastian/comparator.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace SebastianBergmann\Comparator;
+
+use function assert;
+use SebastianBergmann\Exporter\Exporter;
+use SplObjectStorage;
+
+final class SplObjectStorageComparator extends Comparator
+{
+    public function accepts(mixed $expected, mixed $actual): bool
+    {
+        return $expected instanceof SplObjectStorage && $actual instanceof SplObjectStorage;
+    }
+
+    /**
+     * @throws ComparisonFailure
+     */
+    public function assertEquals(mixed $expected, mixed $actual, float $delta = 0.0, bool $canonicalize = false, bool $ignoreCase = false): void
+    {
+        assert($expected instanceof SplObjectStorage);
+        assert($actual instanceof SplObjectStorage);
+
+        $exporter = new Exporter;
+
+        foreach ($actual as $object) {
+            if (!$expected->offsetExists($object)) {
+                throw new ComparisonFailure(
+                    $expected,
+                    $actual,
+                    $exporter->export($expected),
+                    $exporter->export($actual),
+                    'Failed asserting that two objects are equal.',
+                );
+            }
+        }
+
+        foreach ($expected as $object) {
+            if (!$actual->offsetExists($object)) {
+                throw new ComparisonFailure(
+                    $expected,
+                    $actual,
+                    $exporter->export($expected),
+                    $exporter->export($actual),
+                    'Failed asserting that two objects are equal.',
+                );
+            }
+        }
+    }
+}