During November 2025, Balasubramanian Nagarajan developed a foundational data fidelity feature for the renovate-bot/googleapis-_-genai-toolbox repository. He introduced an orderedmap package in Go to ensure SQL query result columns retain their original order when marshaled to JSON, addressing the default behavior of Go’s json.Marshal which sorts map keys. He updated six SQL execution tools to leverage this package and added targeted tests to verify column order preservation. This backend development work, focused on database management and package design, improved the reliability of JSON serialization, reducing the risk of data misinterpretation and supporting more deterministic downstream data consumption.