Give public pages crawler-ready HTML and production analytics.

Crawlers were reading one shared shell, so titles, descriptions, links, and markup were missing or the same on every URL. HeyCatch and Google Analytics load only on the production site and the iOS and Android apps.

Co-authored-by: Cursor <cursoragent@cursor.com>

llm-fe/src/index.tsx

@@ -1,3 +1,4 @@
+import './llm-fe/utils/heycatch';
 import React from 'react';
 import ReactDOM from 'react-dom/client';
 import './index.css';