fix(idaa): load Jitsi external API script dynamically to eliminate race condition

<svelte:head> scripts load asynchronously with no lifecycle hook to await
completion, so onMount could call init_jitsi() before JitsiMeetExternalAPI
was defined. Replace with a dynamic script loader that is awaited between
fetch_novi_data() and init_jitsi(). Also uses the domain from URL params
rather than the hardcoded jitsi.dgrzone.com hostname.

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

src/routes/idaa/(idaa)/video_conferences/+page.svelte

@@ -524,9 +524,31 @@ async function fetch_novi_data() {
     email_input = email ?? '';
 }
 
+/**
+ * Dynamically loads the Jitsi external API script for a given domain and waits for it.
+ * Using <svelte:head> for this script is not reliable — it loads asynchronously and there
+ * is no lifecycle hook to await its completion, causing a race with onMount/init_jitsi.
+ * Loading it here lets us sequence it correctly: fetch_novi_data → load script → init_jitsi.
+ */
+function load_jitsi_script(jitsi_domain: string): Promise<void> {
+    return new Promise((resolve, reject) => {
+        // @ts-expect-error — JitsiMeetExternalAPI is a global injected by the Jitsi script
+        if (typeof JitsiMeetExternalAPI !== 'undefined') {
+            resolve(); // Already loaded (e.g. resync after first load)
+            return;
+        }
+        const script = document.createElement('script');
+        script.src = `https://${jitsi_domain}/external_api.js`;
+        script.onload = () => resolve();
+        script.onerror = () => reject(new Error(`Failed to load Jitsi script from ${jitsi_domain}`));
+        document.head.appendChild(script);
+    });
+}
+
 async function handle_novi_resync() {
     console.log('Jitsi: Manually re-syncing Novi Data...');
     await fetch_novi_data();
+    await load_jitsi_script(domain ?? 'jitsi.dgrzone.com');
     await init_jitsi();
 }
 
@@ -536,11 +558,24 @@ onMount(async () => {
             'Jitsi: onMount - fetching user data and initializing Jitsi...'
         );
     }
-    // $ae_loc.sys_menu.hide = true;
 
     await fetch_novi_data();
 
-    // --- All data fetched, now initialize Jitsi ---
+    if (!domain) {
+        console.error('Jitsi: domain not set after fetch_novi_data — cannot load Jitsi script.');
+        return;
+    }
+
+    try {
+        await load_jitsi_script(domain);
+    } catch (err) {
+        console.error('Jitsi: Failed to load external API script:', err);
+        const container = document.getElementById(jitsi_container_id);
+        if (container) container.innerHTML = '<h1>Jitsi API script failed to load. Please refresh the page.</h1>';
+        return;
+    }
+
+    // --- All data fetched and script ready, now initialize Jitsi ---
     await init_jitsi();
 });
 
@@ -832,9 +867,6 @@ async function init_jitsi() {
 }
 </script>
 
-<svelte:head>
-    <script src="https://jitsi.dgrzone.com/external_api.js"></script>
-</svelte:head>
 
 {#if show_jitsi_container}
     <div id={jitsi_container_id} class="jitsi-container"></div>