feat: implement content management dashboard and update proxy configurations to support AI-assisted learning material generation

src/components/admin/ContentManager.jsx

@@ -16,8 +16,8 @@ const ContentManager = () => {
   const [actionState, setActionState] = useState({}); // { [topicId]: { loading, error, success } }
   const [refineText, setRefineText] = useState('');
 
-  const refresh = () => {
-    const fresh = getAllGeneratedContent();
+  const refresh = async () => {
+    const fresh = await getAllGeneratedContent();
     setItems(fresh);
     // Keep detail view in sync if its topic was updated
     if (selected) {
@@ -56,8 +56,8 @@ const ContentManager = () => {
     }
   };
 
-  const handleDelete = (topicId) => {
-    deleteCachedContent(topicId);
+  const handleDelete = async (topicId) => {
+    await deleteCachedContent(topicId);
     if (selected?.topic.id === topicId) setSelected(null);
     setActionState(prev => { const n = { ...prev }; delete n[topicId]; return n; });
     refresh();