Fix: add missing marked.js and Prism.js CDN scripts to head

index.html

@@ -15,6 +15,17 @@
   
   <!-- Prism.js Tomorrow Theme for Code Highlighting -->
   <link href="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/themes/prism-tomorrow.min.css" rel="stylesheet">
+
+  <!-- Marked.js for Markdown rendering -->
+  <script src="https://cdn.jsdelivr.net/npm/marked@9.1.6/marked.min.js"></script>
+
+  <!-- Prism.js core + common languages for syntax highlighting -->
+  <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/prism.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/components/prism-python.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/components/prism-javascript.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/components/prism-bash.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/components/prism-cpp.min.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/prismjs@1.29.0/components/prism-java.min.js"></script>
   
   <!-- MathJax Configuration for LaTeX Math -->
   <script>