Worked on the SirzBenjie/pokerogue repository to enhance the stability of legendary weather mechanics in a game development context. Focused on resolving a bug where the Chilly Reception move could overwrite immutable legendary weather effects such as Primordial Sea, Desolate Land, and Delta Stream. Utilized TypeScript to update core gameplay logic, ensuring that legendary weather states persist as intended and that messaging accurately reflects ongoing weather conditions. The approach involved adding a dedicated function for handling weather continuation messages and modifying Arena.ts to prevent unintended state changes, thereby improving reliability for competitive play and aligning gameplay with established rules.