Fix markdown code block parser to support language tags and UI classes

assets/js/markdown.js

@@ -41,10 +41,22 @@ function parseMarkdown(markdown) {
                .replace(/"/g, '"')
                .replace(/'/g, ''');
 
-    // Code blocks (```code```) - preserve content and don't process further
+    // Code blocks (```lang\ncode\n```) - preserve content and don't process further
     const codeBlocks = [];
-    html = html.replace(/```([\s\S]*?)```/g, function(match, code) {
-        codeBlocks.push('<pre class="code-block"><code>' + code + '</code></pre>');
+    html = html.replace(/```([a-zA-Z0-9_+-]*)\n?([\s\S]*?)```/g, function(match, lang, code) {
+        lang = lang ? lang.trim() : '';
+        const displayLang = lang || 'text';
+        
+        // Build header with optional copy button if one exists in your UI, otherwise just lang
+        const header = '<div class="lt-code-header"><span class="lt-code-lang">' + displayLang + '</span></div>';
+        
+        // Remove exactly one trailing newline from code block if it exists
+        if (code.endsWith('\n')) {
+            code = code.slice(0, -1);
+        }
+        
+        // Wrap in the specific UI classes expected by base.css
+        codeBlocks.push('<div class="lt-code-block">' + header + '<pre><code>' + code + '</code></pre></div>');
         return '%%CODEBLOCK' + (codeBlocks.length - 1) + '%%';
     });