During January 2026, Kevin Wang developed a unified ErrorEnricher framework for the facebook/buck2 and facebook/buck2-prelude repositories, standardizing error handling across languages and platforms. Leveraging Python and his expertise in software architecture and type systems, he introduced a common ErrorEnricher type with utilities for matching, categorizing, and enriching errors. His work included migrating Apple error handling to this shared framework and adding file-based filtering for targeted remediation. By implementing a dedicated function for string-based suberrors, Kevin improved error clarity and consistency, laying a robust foundation for faster diagnostics and cross-language remediation workflows. The work demonstrated thoughtful, in-depth engineering.