Worked on the PathOfBuildingCommunity/PathOfBuilding repository with a focus on enhancing UI stability and resolving a key bug affecting the passive tree mastery tooltip markers. Addressed an alignment issue by updating the Lua logic to iterate through all mastery effect lines, regardless of allocation status, ensuring consistent indexing and accurate marker placement. This change improved the reliability of visual indicators, reducing confusion for users during passive tree selection. The work emphasized UI development best practices, prioritizing user experience and interface consistency. Over the period, contributed primarily through bug resolution rather than feature development, demonstrating attention to detail and a methodical engineering approach.