Fix bug with absent type of message - get it from node

app/graph_history_manager.py

@@ -221,7 +221,14 @@ class GraphHistoryManager:
         for node_id in path_to_target:
             node = node_map.get(node_id)
             if node and 'message' in node.get('data', {}): # Проверяем наличие поля 'message'
-                messages_for_path.append(node['data']['message'])
+                original_message = node['data']['message']
+                # Извлекаем 'role', 'content' и добавляем 'type' из node['type']
+                messages_for_path.append({
+                    "role": original_message.get("role", "unknown"),
+                    "type": node.get("type", "unknown"),  # Используем 'type' узла
+                    "content": original_message.get("content", ""),
+                    "node_id": original_message.get("node_id", node_id)
+                })
 
         return messages_for_path