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/nikic/php-parser/lib/PhpParser/Node/Attribute.php

@@ -0,0 +1,33 @@
+<?php declare(strict_types=1);
+
+namespace PhpParser\Node;
+
+use PhpParser\Node;
+use PhpParser\NodeAbstract;
+
+class Attribute extends NodeAbstract {
+    /** @var Name Attribute name */
+    public Name $name;
+
+    /** @var list<Arg> Attribute arguments */
+    public array $args;
+
+    /**
+     * @param Node\Name $name Attribute name
+     * @param list<Arg> $args Attribute arguments
+     * @param array<string, mixed> $attributes Additional node attributes
+     */
+    public function __construct(Name $name, array $args = [], array $attributes = []) {
+        $this->attributes = $attributes;
+        $this->name = $name;
+        $this->args = $args;
+    }
+
+    public function getSubNodeNames(): array {
+        return ['name', 'args'];
+    }
+
+    public function getType(): string {
+        return 'Attribute';
+    }
+}