Developed and delivered the Demonic Leagues Task Management Checklist feature for the runelite/plugin-hub repository, enabling users to efficiently organize and track tasks related to demonic leagues. The work focused on plugin development using plaintext, with careful adherence to repository contribution guidelines and modular design principles. Leveraging Git for version control, the implementation involved an atomic, feature-focused commit that updated the checklist while maintaining alignment with project standards. This addition improved user productivity by enhancing task visibility and tracking, and established a scalable foundation for future league-related productivity features within the plugin-hub ecosystem. No major bugs were reported during this period.