During August 2025, Codex focused on stabilizing the HigherOrderCO/HVM3 codebase by addressing a critical type compatibility issue between Core and CTerm modules. Using Haskell and leveraging expertise in compiler and core development, Codex implemented precise type conversions to resolve label mismatches that had caused build failures after a major merge. The solution involved correcting Word32 and Word16 conversions, restoring reliable builds and ensuring system stability across component boundaries. This work reinforced cross-repository integration and improved regression testing practices, reducing the risk of similar issues in the future. Codex’s contribution demonstrated depth in type system management and collaborative engineering.