Initial commit: Grav CMS setup with HTML reference material

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

plugins/email/vendor/symfony/messenger/Stamp/NoAutoAckStamp.php

@@ -0,0 +1,32 @@
+<?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\Messenger\Stamp;
+
+use Symfony\Component\Messenger\Handler\HandlerDescriptor;
+
+/**
+ * Marker telling that ack should not be done automatically for this message.
+ */
+final class NoAutoAckStamp implements NonSendableStampInterface
+{
+    private $handlerDescriptor;
+
+    public function __construct(HandlerDescriptor $handlerDescriptor)
+    {
+        $this->handlerDescriptor = $handlerDescriptor;
+    }
+
+    public function getHandlerDescriptor(): HandlerDescriptor
+    {
+        return $this->handlerDescriptor;
+    }
+}