Mode switching (#10) (#26)

src/js/api.js

@@ -170,6 +170,9 @@ async function sendApiRequest(messages) {
         });
         updateChat(State.currentChatId, { messages, model });
         
+        // Persist assistant response to backend (managed mode)
+        await onAssistantResponse(assistantContent, model);
+        
         if (!State.settings.stream) {
             renderMessages(messages);
         }