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>

app/Http/Controllers/Admin/CommentController.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace App\Http\Controllers\Admin;
+
+use App\Http\Controllers\Controller;
+use App\Models\ActivityLog;
+use App\Models\Comment;
+use Illuminate\Http\RedirectResponse;
+
+class CommentController extends Controller
+{
+    public function softDelete(Comment $comment): RedirectResponse
+    {
+        $comment->deleted_at = now();
+        $comment->deleted_by = auth()->id();
+        $comment->save();
+
+        ActivityLog::logWithChanges('deleted', __('admin.log_comment_deleted', ['event' => $comment->event?->title]), 'Event', $comment->event_id, ['comment' => mb_substr($comment->body, 0, 100), 'event' => $comment->event?->title], null);
+
+        return back()->with('success', __('events.comment_removed'));
+    }
+}