diff --git a/frontend/src/assets/synthwave-design-showcase.html b/frontend/src/assets/synthwave-design-showcase.html
index 552256a..ee99854 100644
--- a/frontend/src/assets/synthwave-design-showcase.html
+++ b/frontend/src/assets/synthwave-design-showcase.html
@@ -1,3 +1,4 @@
+<!-- Synthwave Design System Showcase — reference for mail-server frontend -->
 <!DOCTYPE html>
 <html lang="en" class="h-full">
 <head>