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/var-dumper/Resources/functions/dump.php

@@ -0,0 +1,68 @@
+<?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.
+ */
+
+use Symfony\Component\VarDumper\Caster\ScalarStub;
+use Symfony\Component\VarDumper\VarDumper;
+
+if (!function_exists('dump')) {
+    /**
+     * @author Nicolas Grekas <p@tchwork.com>
+     * @author Alexandre Daubois <alex.daubois@gmail.com>
+     */
+    function dump(mixed ...$vars): mixed
+    {
+        if (!$vars) {
+            VarDumper::dump(new ScalarStub('🐛'));
+
+            return null;
+        }
+
+        if (array_key_exists(0, $vars) && 1 === count($vars)) {
+            VarDumper::dump($vars[0]);
+            $k = 0;
+        } else {
+            foreach ($vars as $k => $v) {
+                VarDumper::dump($v, is_int($k) ? 1 + $k : $k);
+            }
+        }
+
+        if (1 < count($vars)) {
+            return $vars;
+        }
+
+        return $vars[$k];
+    }
+}
+
+if (!function_exists('dd')) {
+    function dd(mixed ...$vars): never
+    {
+        if (!in_array(\PHP_SAPI, ['cli', 'phpdbg', 'embed'], true) && !headers_sent()) {
+            header('HTTP/1.1 500 Internal Server Error');
+        }
+
+        if (!$vars) {
+            VarDumper::dump(new ScalarStub('🐛'));
+
+            exit(1);
+        }
+
+        if (array_key_exists(0, $vars) && 1 === count($vars)) {
+            VarDumper::dump($vars[0]);
+        } else {
+            foreach ($vars as $k => $v) {
+                VarDumper::dump($v, is_int($k) ? 1 + $k : $k);
+            }
+        }
+
+        exit(1);
+    }
+}