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

src/ContentFeed/Exception/ContentFeedStoppedException.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\ContentFeed\Exception;
+
+/**
+ * Ends the whole sync run, keeping everything as it is. The next scheduled run tries again.
+ *
+ * Thrown for a manifest that cannot be trusted, three consecutive 5xx responses or
+ * timeouts, and anything else that means TYPO3 is not in a state to be read.
+ */
+class ContentFeedStoppedException extends \RuntimeException
+{
+}