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>

lang/en/profile.php

@@ -0,0 +1,43 @@
+<?php
+return [
+    'title' => 'My Profile',
+    'name_label' => 'Name',
+    'email_label' => 'Email',
+    'email_readonly' => 'The email address cannot be changed.',
+    'phone_label' => 'Phone (mobile)',
+    'role_label' => 'Role',
+    'language_label' => 'Language',
+    'my_children' => 'My Children',
+    'updated' => 'Profile updated.',
+
+    // Profile picture
+    'profile_picture' => 'Profile Picture',
+    'upload_picture' => 'Upload picture',
+    'remove_picture' => 'Remove picture',
+    'max_picture_size' => 'Max. 2 MB (JPG, PNG, GIF, WEBP)',
+
+    // GDPR consent declaration
+    'dsgvo_title' => 'GDPR Consent Declaration',
+    'dsgvo_description' => 'Upload the signed consent declaration as a photo or PDF here. One declaration applies for both parents jointly.',
+    'dsgvo_upload' => 'Upload declaration',
+    'dsgvo_replace' => 'Replace',
+    'dsgvo_remove' => 'Remove declaration',
+    'dsgvo_file_hint' => 'PDF or image (max. 10 MB)',
+    'dsgvo_uploaded' => 'Consent declaration has been uploaded.',
+    'dsgvo_removed' => 'Consent declaration has been removed.',
+    'dsgvo_view' => 'View',
+    'dsgvo_confirmed' => 'Confirmed',
+    'dsgvo_pending' => 'Waiting for confirmation by admin/coach',
+    'dsgvo_confirmed_by' => 'Confirmed by :name on :date',
+    'dsgvo_confirm_remove' => 'Really remove the consent declaration? Any existing confirmation will also be reset.',
+
+    // Delete account
+    'danger_zone' => 'Danger Zone',
+    'delete_account' => 'Delete Account',
+    'delete_account_hint' => 'Your profile will be deactivated and can be restored by an administrator within 7 days. Historical data (comments, participations) will be preserved.',
+    'delete_warning_children' => 'Warning: You are the only parent for the following children. They will also be deactivated:',
+    'delete_confirm' => 'Do you really want to delete your account? This can only be undone by an administrator.',
+    'account_deleted' => 'Your account has been deleted.',
+    'cannot_delete_admin' => 'The administrator account cannot be deleted.',
+    'cannot_delete_staff' => 'Coaches and admins cannot delete their account via the profile page.',
+];