In July 2025, contributed to the facebook/pyrefly repository by implementing Read-Only Inherited Attributes Protection, addressing a bug related to attribute assignment and deletion via super() in Python class hierarchies. This work enforced read-only semantics for inherited attributes, thereby preserving encapsulation and reducing the risk of unintended mutations across object-oriented designs. The solution involved a focused, low-risk patch that strengthened API stability without introducing unnecessary complexity. Demonstrating skills in Rust, inheritance management, and type safety, the developer delivered a targeted fix that aligns with project standards and minimizes maintenance overhead, ensuring safer attribute access patterns in complex codebases.