Initial commit: Grav CMS setup with HTML reference material

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

plugins/email/vendor/symfony/messenger/Middleware/AddBusNameStampMiddleware.php

@@ -0,0 +1,39 @@
+<?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\Middleware;
+
+use Symfony\Component\Messenger\Envelope;
+use Symfony\Component\Messenger\Stamp\BusNameStamp;
+
+/**
+ * Adds the BusNameStamp to the bus.
+ *
+ * @author Ryan Weaver <ryan@symfonycasts.com>
+ */
+class AddBusNameStampMiddleware implements MiddlewareInterface
+{
+    private $busName;
+
+    public function __construct(string $busName)
+    {
+        $this->busName = $busName;
+    }
+
+    public function handle(Envelope $envelope, StackInterface $stack): Envelope
+    {
+        if (null === $envelope->last(BusNameStamp::class)) {
+            $envelope = $envelope->with(new BusNameStamp($this->busName));
+        }
+
+        return $stack->next()->handle($envelope, $stack);
+    }
+}