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/fakerphp/faker/src/Faker/Provider/Barcode.php

@@ -0,0 +1,107 @@
+<?php
+
+namespace Faker\Provider;
+
+use Faker\Calculator\Ean;
+use Faker\Calculator\Isbn;
+
+/**
+ * @see http://en.wikipedia.org/wiki/EAN-13
+ * @see http://en.wikipedia.org/wiki/ISBN
+ */
+class Barcode extends Base
+{
+    private function ean($length = 13)
+    {
+        $code = static::numerify(str_repeat('#', $length - 1));
+
+        return $code . Ean::checksum($code);
+    }
+
+    /**
+     * Utility function for computing EAN checksums
+     *
+     * @deprecated Use \Faker\Calculator\Ean::checksum() instead
+     *
+     * @param string $input
+     *
+     * @return int
+     */
+    protected static function eanChecksum($input)
+    {
+        return Ean::checksum($input);
+    }
+
+    /**
+     * ISBN-10 check digit
+     *
+     * @see http://en.wikipedia.org/wiki/International_Standard_Book_Number#ISBN-10_check_digits
+     * @deprecated Use \Faker\Calculator\Isbn::checksum() instead
+     *
+     * @param string $input ISBN without check-digit
+     *
+     * @throws \LengthException When wrong input length passed
+     *
+     * @return string
+     */
+    protected static function isbnChecksum($input)
+    {
+        return Isbn::checksum($input);
+    }
+
+    /**
+     * Get a random EAN13 barcode.
+     *
+     * @return string
+     *
+     * @example '4006381333931'
+     */
+    public function ean13()
+    {
+        return $this->ean(13);
+    }
+
+    /**
+     * Get a random EAN8 barcode.
+     *
+     * @return string
+     *
+     * @example '73513537'
+     */
+    public function ean8()
+    {
+        return $this->ean(8);
+    }
+
+    /**
+     * Get a random ISBN-10 code
+     *
+     * @see http://en.wikipedia.org/wiki/International_Standard_Book_Number
+     *
+     * @return string
+     *
+     * @example '4881416324'
+     */
+    public function isbn10()
+    {
+        $code = static::numerify(str_repeat('#', 9));
+
+        return $code . Isbn::checksum($code);
+    }
+
+    /**
+     * Get a random ISBN-13 code
+     *
+     * @see http://en.wikipedia.org/wiki/International_Standard_Book_Number
+     *
+     * @return string
+     *
+     * @example '9790404436093'
+     */
+    public function isbn13()
+    {
+        $code = '97' . self::numberBetween(8, 9) . static::numerify(str_repeat('#', 9));
+
+        return $code . Ean::checksum($code);
+    }
+}