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/league/commonmark/src/Parser/MarkdownParserState.php

@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of the league/commonmark package.
+ *
+ * (c) Colin O'Dell <colinodell@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace League\CommonMark\Parser;
+
+use League\CommonMark\Parser\Block\BlockContinueParserInterface;
+use League\CommonMark\Parser\Block\ParagraphParser;
+
+/**
+ * @internal You should rely on the interface instead
+ */
+final class MarkdownParserState implements MarkdownParserStateInterface
+{
+    /** @psalm-readonly */
+    private BlockContinueParserInterface $activeBlockParser;
+
+    /** @psalm-readonly */
+    private BlockContinueParserInterface $lastMatchedBlockParser;
+
+    public function __construct(BlockContinueParserInterface $activeBlockParser, BlockContinueParserInterface $lastMatchedBlockParser)
+    {
+        $this->activeBlockParser      = $activeBlockParser;
+        $this->lastMatchedBlockParser = $lastMatchedBlockParser;
+    }
+
+    public function getActiveBlockParser(): BlockContinueParserInterface
+    {
+        return $this->activeBlockParser;
+    }
+
+    public function getLastMatchedBlockParser(): BlockContinueParserInterface
+    {
+        return $this->lastMatchedBlockParser;
+    }
+
+    public function getParagraphContent(): ?string
+    {
+        if (! $this->lastMatchedBlockParser instanceof ParagraphParser) {
+            return null;
+        }
+
+        $paragraphParser = $this->lastMatchedBlockParser;
+        $content         = $paragraphParser->getContentString();
+
+        return $content === '' ? null : $content;
+    }
+}