add Umami analytics script

Author: groksrc

src/layouts/Layout.astro

@@ -22,6 +22,9 @@ const { title = 'Basic Memory', description = 'Basic Memory - Persistent memory
     <meta name="description" content={description} />
     <title>{!title || title === 'Basic Memory' ? 'Basic Memory' : `${title} - Basic Memory`}</title>
 
+    <!-- Umami Analytics -->
+    <script defer src="https://cloud.umami.is/script.js" data-website-id="8d51086e-5c67-401e-97b0-b24706a6d4f3"></script>
+
     <!-- Theme initialization script - prevents flash of light mode -->
     <script is:inline>
       (function() {