Developed and delivered a user-facing content annotation feature for the Ten10-Academy-Team/Foundations-of-tech repository, enabling personalized notes and enhanced engagement within text-based learning materials. Focused on creative writing and text editing, the work introduced a scalable personalization hook by adding annotation lines and expanding existing content, all implemented through simple text insertions. The approach maintained backward compatibility, requiring no schema changes and ensuring seamless integration with current workflows. Emphasized clear version control practices with descriptive commit messages and traceable changes. This feature lays the groundwork for future collaborative and note-taking capabilities, supporting richer, more interactive learning experiences for users.