feat(dump): parse dump filenames and detect MySQL variant

src/Service/MySqlVariant.php

@@ -0,0 +1,17 @@
+<?php declare(strict_types=1);
+
+namespace AeonDumpManager\Service;
+
+/**
+ * Pure version-string check, split out of DumpBinaryLocator so it's
+ * unit-testable without a live Shopware kernel/DB connection. Mirrors
+ * Doctrine DBAL's own AbstractMySQLDriver::createDatabasePlatformForVersion()
+ * check — the stable, version-portable way to tell MariaDB from MySQL.
+ */
+class MySqlVariant
+{
+    public static function isMariaDb(string $serverVersion): bool
+    {
+        return stripos($serverVersion, 'mariadb') !== false;
+    }
+}