added genre cache

frontend/index.html

@@ -6,8 +6,8 @@
     <meta content="width=device-width, initial-scale=1.0" name="viewport" />
     <link href="./index.css" rel="stylesheet" />
     <title>yellowjacket</title>
+    <script src="/index.ts" type="module"></script>
 </head>
-<script src="/index.ts" type="module"></script>
 
 <body>
     <header class="top-bar">