feat: add MCP server for the website chatbot over a mirrored TYPO3 content feed

src/ContentFeed/Exception/ContentRequestFailedException.php

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\ContentFeed\Exception;
+
+/**
+ * One request failed without ending the run. The items it was for keep their stored
+ * version and are retried next run.
+ */
+class ContentRequestFailedException extends \RuntimeException
+{
+}