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/ComparisonFailure.php

@@ -0,0 +1,68 @@
+<?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 RuntimeException;
+use SebastianBergmann\Diff\Differ;
+use SebastianBergmann\Diff\Output\UnifiedDiffOutputBuilder;
+
+final class ComparisonFailure extends RuntimeException
+{
+    private mixed $expected;
+    private mixed $actual;
+    private string $expectedAsString;
+    private string $actualAsString;
+
+    public function __construct(mixed $expected, mixed $actual, string $expectedAsString, string $actualAsString, string $message = '')
+    {
+        parent::__construct($message);
+
+        $this->expected         = $expected;
+        $this->actual           = $actual;
+        $this->expectedAsString = $expectedAsString;
+        $this->actualAsString   = $actualAsString;
+    }
+
+    public function getActual(): mixed
+    {
+        return $this->actual;
+    }
+
+    public function getExpected(): mixed
+    {
+        return $this->expected;
+    }
+
+    public function getActualAsString(): string
+    {
+        return $this->actualAsString;
+    }
+
+    public function getExpectedAsString(): string
+    {
+        return $this->expectedAsString;
+    }
+
+    public function getDiff(): string
+    {
+        if (!$this->actualAsString && !$this->expectedAsString) {
+            return '';
+        }
+
+        $differ = new Differ(new UnifiedDiffOutputBuilder("\n--- Expected\n+++ Actual\n"));
+
+        return $differ->diff($this->expectedAsString, $this->actualAsString);
+    }
+
+    public function toString(): string
+    {
+        return $this->getMessage() . $this->getDiff();
+    }
+}