{"ok":true,"service":"Speech + RAG API","speech":{"POST /v1/audio/transcriptions":"audio→text","POST /v1/audio/speech":"text→audio"},"rag":{"GET /books":"список книг","GET /books/{id}":"карточка","GET /books/{id}/page-count":"страниц","GET /books/{id}/pages?from&to":"страницы base64","GET /books/{id}/pages/{n}":"одна страница","GET /books/{id}/chunks":"текст","POST /search":"векторный поиск"}}