feat: scaffold plugin foundation

src/Deactivator.php

@@ -0,0 +1,14 @@
+<?php
+/**
+ * Plugin deactivation lifecycle hook.
+ *
+ * @package WPContentSync
+ */
+
+namespace WPContentSync;
+
+final class Deactivator {
+	public static function deactivate(): void {
+		delete_transient( 'wpcs_active_operation' );
+	}
+}