In September 2025, Justin enhanced the robot safety configuration in the huggingface/lerobot repository by introducing a more flexible max_relative_target system. He reworked the configuration to support both float values and per-motor dictionaries, replacing the previous integer-only approach and allowing for greater precision and adaptability across different robot models. Using Python and leveraging type hinting, Justin also removed the unused stretch3 parameter to streamline the configuration process. He updated documentation and type annotations to reflect these changes, ensuring clarity for future maintainers. This work improved safety compliance and reduced configuration friction, demonstrating thoughtful application of robotics configuration principles.