GET http://localhost:5155/gw_ai_class/api/audio_all/公文写作 Ai 实战思维课/01 AI时代公文写作新法/
For JSON format, add the query parameter: ?format=json
GET http://localhost:{{port}}/folder/audio_all/公文写作 Ai 实战思维课/01 AI时代公文写作新法/
Always returns JSON with directory structure and navigation links