{"message":"Sketch Feature API is running!","endpoints":{"generate-token":"POST /generate-token - Generate JWT token for authorized packages","pencil_sketch":"POST /pencil_sketch - Generate pencil sketch from image","portrait_sketch":"POST /portrait_sketch - Generate portrait sketch from image","colorpencil_sketch":"POST /colorpencil_sketch - Generate color pencil sketch from image"},"notes":{"authentication":"Use /generate-token to get JWT, include in Authorization header for sketch endpoints"}}