During September 2025, Cross D. developed Cosmo sled type support for the oxidecomputer/omicron repository, focusing on embedded systems and hardware abstraction using Rust. They extended the Baseboard type and introduced a new OxideSled enum, refactoring the hardware detection logic to improve reliability and simplify future integrations. Their work ensured that configuration propagation, such as skip_timesync, maintained consistent clock behavior across different sled types, reducing deployment risk. By aligning detection logic and expanding the data model, Cross D. enhanced deployment readiness and compatibility for new hardware, demonstrating a strong grasp of system programming and embedded Rust development principles.