During January 2025, Malvin focused on improving dependency management and code hygiene in the FormalBook repository. He addressed a latent bug by cleaning the project manifest, removing an outdated top-level entry to ensure the dependency graph accurately reflected current requirements. Using Lean and leveraging skills in code cleanup and manifest management, Malvin also deleted a redundant import line from FormalBook.lean, reducing the risk of future build or import issues. His work included validating dependency integrity and documenting the rationale behind these changes, supporting future audits and easing onboarding for new contributors. The updates enhanced build reproducibility and maintainability.