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>

resources/views/components/traffic-light.blade.php

@@ -0,0 +1,13 @@
+@props(['event'])
+
+@php
+    $yes = $event->participants->where('status', \App\Enums\ParticipantStatus::Yes)->count();
+    $no = $event->participants->where('status', \App\Enums\ParticipantStatus::No)->count();
+    $open = $event->participants->where('status', \App\Enums\ParticipantStatus::Unknown)->count();
+@endphp
+
+<span class="inline-flex items-center gap-1 text-xs font-semibold tabular-nums" title="{{ __('events.confirmations') }}: {{ $yes }} / {{ __('events.rejections') }}: {{ $no }} / {{ __('events.open_responses') }}: {{ $open }}">
+    <span class="text-green-600">{{ $yes }}</span>
+    <span class="text-red-500">{{ $no }}</span>
+    <span class="text-gray-400">{{ $open }}</span>
+</span>