Calvin Lee developed two targeted features over a two-month period, focusing on backend development and documentation. For the thoughtbot.social repository, Calvin built a MathML content sanitization transformer that processes post content by extracting LaTeX or plain text annotations from MathML elements, ensuring accurate rendering of mathematical expressions and improving the quality of scientific posts. This solution leveraged Ruby and regular expressions to enhance content safety and display. In the leanprover/reference-manual repository, Calvin improved documentation by adding navigation tags to the Lean Language Manual, streamlining developer onboarding and searchability. The work demonstrated depth in both content sanitization and technical documentation.