During January 2026, Blackhc contributed to the thinking-machines-lab/tinker-cookbook repository by addressing a content rendering issue in the backend. Using Python and leveraging backend development and testing skills, Blackhc normalized the use of content tags by replacing all instances of <thinking/> with <think/>, ensuring consistent formatting across the codebase. To further enhance reliability, a validation test was introduced to confirm that formatted content could be parsed back to its original structure, reducing the risk of formatting drift. This work improved cross-platform rendering consistency and streamlined quality assurance, demonstrating careful attention to maintainability and robust content processing.