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/composer/autoload_real.php

@@ -0,0 +1,50 @@
+<?php
+
+// autoload_real.php @generated by Composer
+
+class ComposerAutoloaderInitc514d8f7b9fc5970bdd94287905ef584
+{
+    private static $loader;
+
+    public static function loadClassLoader($class)
+    {
+        if ('Composer\Autoload\ClassLoader' === $class) {
+            require __DIR__ . '/ClassLoader.php';
+        }
+    }
+
+    /**
+     * @return \Composer\Autoload\ClassLoader
+     */
+    public static function getLoader()
+    {
+        if (null !== self::$loader) {
+            return self::$loader;
+        }
+
+        require __DIR__ . '/platform_check.php';
+
+        spl_autoload_register(array('ComposerAutoloaderInitc514d8f7b9fc5970bdd94287905ef584', 'loadClassLoader'), true, true);
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(__DIR__));
+        spl_autoload_unregister(array('ComposerAutoloaderInitc514d8f7b9fc5970bdd94287905ef584', 'loadClassLoader'));
+
+        require __DIR__ . '/autoload_static.php';
+        call_user_func(\Composer\Autoload\ComposerStaticInitc514d8f7b9fc5970bdd94287905ef584::getInitializer($loader));
+
+        $loader->register(true);
+
+        $filesToLoad = \Composer\Autoload\ComposerStaticInitc514d8f7b9fc5970bdd94287905ef584::$files;
+        $requireFile = \Closure::bind(static function ($fileIdentifier, $file) {
+            if (empty($GLOBALS['__composer_autoload_files'][$fileIdentifier])) {
+                $GLOBALS['__composer_autoload_files'][$fileIdentifier] = true;
+
+                require $file;
+            }
+        }, null, null);
+        foreach ($filesToLoad as $fileIdentifier => $file) {
+            $requireFile($fileIdentifier, $file);
+        }
+
+        return $loader;
+    }
+}