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/ralouphie/getallheaders/README.md

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+getallheaders
+=============
+
+PHP `getallheaders()` polyfill. Compatible with PHP >= 5.3.
+
+[![Build Status](https://travis-ci.org/ralouphie/getallheaders.svg?branch=master)](https://travis-ci.org/ralouphie/getallheaders)
+[![Coverage Status](https://coveralls.io/repos/ralouphie/getallheaders/badge.png?branch=master)](https://coveralls.io/r/ralouphie/getallheaders?branch=master)
+[![Latest Stable Version](https://poser.pugx.org/ralouphie/getallheaders/v/stable.png)](https://packagist.org/packages/ralouphie/getallheaders)
+[![Latest Unstable Version](https://poser.pugx.org/ralouphie/getallheaders/v/unstable.png)](https://packagist.org/packages/ralouphie/getallheaders)
+[![License](https://poser.pugx.org/ralouphie/getallheaders/license.png)](https://packagist.org/packages/ralouphie/getallheaders)
+
+
+This is a simple polyfill for [`getallheaders()`](http://www.php.net/manual/en/function.getallheaders.php).
+
+## Install
+
+For PHP version **`>= 5.6`**:
+
+```
+composer require ralouphie/getallheaders
+```
+
+For PHP version **`< 5.6`**:
+
+```
+composer require ralouphie/getallheaders "^2"
+```