havre: load split.js

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KjyFZEJivqQMhhCyyQau49

ventures/havre/index.html

@@ -24,6 +24,7 @@
 <link rel="stylesheet" href="style.css">
 <script type="module" src="app.js"></script>
 <script src="update.js" defer></script>
+<script src="split.js" defer></script>
 </head>
 <body>
 <a class="skip" href="#chat">skip to the chat</a>