Upd mermaid cache

index.html

@@ -1354,7 +1354,7 @@ L_t = α * CE(y_t) + (1-α) * τ^2 * KL( p_T(·|τ) || p_S(·) )</code></pre>
     }
     
     // Cache mermaid src (before any render)
-    cacheMermaidSources();
+    window.addEventListener('DOMContentLoaded', cacheMermaidSources);
 
     function showToast(msg) {
       const t = $('#toast');
@@ -1483,23 +1483,22 @@ L_t = α * CE(y_t) + (1-α) * τ^2 * KL( p_T(·|τ) || p_S(·) )</code></pre>
         btn.addEventListener('click', () => {
           const group = btn.closest('[role="tablist"]') || btn.parentElement;
           const tabId = btn.dataset.tab;
-
-          // activate tabs in the same group
+    
           $$('.tab', group).forEach(t => t.classList.remove('active'));
           btn.classList.add('active');
-
-          // show/hide related panels (by id)
+    
           const root = group.closest('.card-body') || document;
           $$('.tabpanel', root).forEach(p => p.classList.add('hidden'));
-          const panel = $('#' + tabId);
+    
+          const panel = document.getElementById(tabId);
           if (panel) panel.classList.remove('hidden');
-
-          // re-render mermaid if panel contains diagrams
-          requestAnimationFrame(() => await renderMermaid());
+    
+          requestAnimationFrame(() => { renderMermaid(); });
         });
       });
     }
 
+
     // ---------- Accordion ----------
     function initAccordion() {
       $$('.accordion-item').forEach(item => {
@@ -1805,7 +1804,7 @@ L_t = α * CE(y_t) + (1-α) * τ^2 * KL( p_T(·|τ) || p_S(·) )</code></pre>
       // Render math + mermaid after libs load
       setTimeout(() => {
         renderMath();
-        await renderMermaid();
+        renderMermaid();
       }, 0);
 
       initGSAP();