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/Dumper/ContextProvider/RequestContextProvider.php

@@ -0,0 +1,50 @@
+<?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\VarDumper\Dumper\ContextProvider;
+
+use Symfony\Component\HttpFoundation\RequestStack;
+use Symfony\Component\VarDumper\Caster\ReflectionCaster;
+use Symfony\Component\VarDumper\Cloner\VarCloner;
+
+/**
+ * Tries to provide context from a request.
+ *
+ * @author Maxime Steinhausser <maxime.steinhausser@gmail.com>
+ */
+final class RequestContextProvider implements ContextProviderInterface
+{
+    private VarCloner $cloner;
+
+    public function __construct(
+        private RequestStack $requestStack,
+    ) {
+        $this->cloner = new VarCloner();
+        $this->cloner->setMaxItems(0);
+        $this->cloner->addCasters(ReflectionCaster::UNSET_CLOSURE_FILE_INFO);
+    }
+
+    public function getContext(): ?array
+    {
+        if (null === $request = $this->requestStack->getCurrentRequest()) {
+            return null;
+        }
+
+        $controller = $request->attributes->get('_controller');
+
+        return [
+            'uri' => $request->getUri(),
+            'method' => $request->getMethod(),
+            'controller' => $controller ? $this->cloner->cloneVar($controller) : $controller,
+            'identifier' => hash('xxh128', spl_object_id($request).'@'.$_SERVER['REQUEST_TIME_FLOAT']),
+        ];
+    }
+}