fix: resolve Vite parse5 HTML error in index.html

Fix malformed Chatwoot chat widget script that caused Vite's parse5
HTML parser to throw "eof-in-element-that-can-contain-only-text".
Also fix broken URL (https// -> https://) for the chat widget.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/index.html

@@ -11,7 +11,7 @@
     <script type="module" src="/src/main.tsx"></script>
     <script>
       (function(d,t) {
-    var BASE_URL="https//chat.hoaledgeriq.com";
+        var BASE_URL="https://chat.hoaledgeriq.com";
         var g=d.createElement(t),s=d.getElementsByTagName(t)[0];
         g.src=BASE_URL+"/packs/js/sdk.js";
         g.async=true;