Developed and delivered a daily progress logging feature for Duolingo within the IntensiveCoLearning/english_2nd repository, focusing on enhancing user engagement tracking. The work centered on updating Markdown documentation files, specifically Chacha&Qi.md and Qi.md, to record detailed progress entries and document a consecutive winning streak for October 25–27. This approach established a clear, traceable record of user activity, supporting future analytics and gamification metrics. Leveraging skills in documentation, Markdown, and git-based version control, the developer ensured data integrity and cross-file consistency. No bugs were reported or fixed during this period, reflecting a focused effort on feature delivery and documentation quality.