Since the last update, I shifted the backend toward a clearer screen-driven architecture by introducing dedicated screen services and presenters. This included the first lesson screen flow, with a new lesson endpoint and controller designed to return lesson content in a frontend-friendly shape. I also prepared the presentation layer to merge lesson data with user progress details, setting up cleaner contracts between API and UI.

I then expanded the dashboard API with a v2 response format focused on frontend consumption. The dashboard service now aggregates the user’s latest studied lesson plus quick stats in one place, and maps them into a structured payload for cards like Continue Learning, Lessons Completed, Exercise Accuracy, Characters Mastered, and Flashcards Reviewed. This makes the home experience more actionable and reduces data assembly work on the client side.

To support this, I improved backend organization by separating domain services from screen services and updating controllers to use the new structure. I also added supporting progress/statistics functions to centralize calculations and keep business logic out of route handlers. Overall, this sprint was about making the backend more scalable, consistent, and aligned with the next frontend iterations.