{"message":"Dataset & ML Training API is running","docs_url":"/docs","endpoints":{"upload_csv":"POST /api/datasets/upload","get_sample":"GET /api/datasets/sample/{name} (names: iris, housing, energy)","list_samples":"GET /api/datasets/samples","list_datasets":"GET /api/datasets","train_model":"POST /api/train","predict":"POST /api/predict","list_models":"GET /api/models"}}