During December 2025, Nna Nna774 focused on enhancing floating-point to string conversion reliability in both the ruby/json and ruby/ruby repositories. By expanding the destination buffer for the fpconv_dtoa function from 28 to 32 characters, Nna addressed potential buffer overflows and improved the precision of numeric serialization. This C programming work required careful attention to memory management and low-level data conversion, ensuring that floating-point values were accurately represented in APIs and logs. The changes delivered consistent behavior across repositories, reducing truncation risks and strengthening data integrity for JSON tooling and Ruby core, reflecting a thoughtful and targeted engineering approach.