Fix #134 - Doc class dropdown shows no options when editing sections

Author: Bob Strahan

src/ui/src/components/sections-panel/SectionsPanel.jsx

@@ -275,10 +275,17 @@ const SectionsPanel = ({ sections, pages, documentItem, mergedConfig, onSaveChan
   // Get available classes from configuration
   const getAvailableClasses = () => {
     if (!configuration?.classes) return [];
-    return configuration.classes.map((cls) => ({
-      label: cls.name,
-      value: cls.name,
-    }));
+    return configuration.classes.map((cls) => {
+      // Support both JSON Schema and legacy formats
+      // JSON Schema: $id or x-aws-idp-document-type
+      // Legacy: name
+      const className = cls.$id || cls['x-aws-idp-document-type'] || cls.name;
+      
+      return {
+        label: className,
+        value: className,
+      };
+    }).filter(option => option.value); // Remove any undefined entries
   };
 
   // Generate next sequential section ID