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/process/Pipes/PipesInterface.php

@@ -0,0 +1,61 @@
+<?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\Process\Pipes;
+
+/**
+ * PipesInterface manages descriptors and pipes for the use of proc_open.
+ *
+ * @author Romain Neutron <imprec@gmail.com>
+ *
+ * @internal
+ */
+interface PipesInterface
+{
+    public const CHUNK_SIZE = 16384;
+
+    /**
+     * Returns an array of descriptors for the use of proc_open.
+     */
+    public function getDescriptors(): array;
+
+    /**
+     * Returns an array of filenames indexed by their related stream in case these pipes use temporary files.
+     *
+     * @return string[]
+     */
+    public function getFiles(): array;
+
+    /**
+     * Reads data in file handles and pipes.
+     *
+     * @param bool $blocking Whether to use blocking calls or not
+     * @param bool $close    Whether to close pipes if they've reached EOF
+     *
+     * @return string[] An array of read data indexed by their fd
+     */
+    public function readAndWrite(bool $blocking, bool $close = false): array;
+
+    /**
+     * Returns if the current state has open file handles or pipes.
+     */
+    public function areOpen(): bool;
+
+    /**
+     * Returns if pipes are able to read output.
+     */
+    public function haveReadSupport(): bool;
+
+    /**
+     * Closes file handles and pipes.
+     */
+    public function close(): void;
+}