Worked on the vercel/turborepo repository to enhance the stability of the VT100 TUI renderer, focusing on scenarios involving heavy scrolling and column wrapping. Addressed a crash caused by invalid row handling by implementing safer logic in Rust, ensuring the renderer remains stable even under edge-case navigation. Developed and integrated regression tests to cover these scenarios, using Rust’s testing framework to validate that no panics occur during column wrapping. This work improved both developer and user experience when navigating large repositories, demonstrating a methodical approach to TUI development, bug fixing, and robust testing practices within a complex codebase.