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/symfony/translation/Test/ProviderTestCase.php

@@ -0,0 +1,87 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Translation\Test;
+
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+use Psr\Log\LoggerInterface;
+use Psr\Log\NullLogger;
+use Symfony\Component\HttpClient\MockHttpClient;
+use Symfony\Component\Translation\Dumper\XliffFileDumper;
+use Symfony\Component\Translation\Loader\ArrayLoader;
+use Symfony\Component\Translation\Loader\LoaderInterface;
+use Symfony\Component\Translation\Provider\ProviderInterface;
+use Symfony\Component\Translation\TranslatorBag;
+use Symfony\Component\Translation\TranslatorBagInterface;
+use Symfony\Contracts\HttpClient\HttpClientInterface;
+
+/**
+ * A test case to ease testing a translation provider.
+ *
+ * @author Mathieu Santostefano <msantostefano@protonmail.com>
+ */
+abstract class ProviderTestCase extends TestCase
+{
+    protected HttpClientInterface $client;
+    protected LoggerInterface|MockObject $logger;
+    protected string $defaultLocale;
+    protected LoaderInterface|MockObject $loader;
+    protected XliffFileDumper|MockObject $xliffFileDumper;
+    protected TranslatorBagInterface|MockObject $translatorBag;
+
+    abstract public static function createProvider(HttpClientInterface $client, LoaderInterface $loader, LoggerInterface $logger, string $defaultLocale, string $endpoint): ProviderInterface;
+
+    /**
+     * @return iterable<array{0: ProviderInterface, 1: string}>
+     */
+    abstract public static function toStringProvider(): iterable;
+
+    /**
+     * @dataProvider toStringProvider
+     */
+    #[DataProvider('toStringProvider')]
+    public function testToString(ProviderInterface $provider, string $expected)
+    {
+        $this->assertSame($expected, (string) $provider);
+    }
+
+    protected function getClient(): MockHttpClient
+    {
+        return $this->client ??= new MockHttpClient();
+    }
+
+    protected function getLoader(): LoaderInterface
+    {
+        return $this->loader ??= new ArrayLoader();
+    }
+
+    protected function getLogger(): LoggerInterface
+    {
+        return $this->logger ??= new NullLogger();
+    }
+
+    protected function getDefaultLocale(): string
+    {
+        return $this->defaultLocale ??= 'en';
+    }
+
+    protected function getXliffFileDumper(): XliffFileDumper
+    {
+        return $this->xliffFileDumper ??= new XliffFileDumper();
+    }
+
+    protected function getTranslatorBag(): TranslatorBagInterface
+    {
+        return $this->translatorBag ??= new TranslatorBag();
+    }
+}