Hannah Arnold established the foundational architecture for the data-hydenv/data repository by delivering the initial core feature set and scaffolding essential data and resource files. Her work focused on disciplined data management and robust file handling, ensuring traceable and maintainable repository structure from the outset. Leveraging skills in repository bootstrapping and version control, she created a consistent framework that supports future feature development and reliable data provisioning across environments. Although no bugs were addressed during this period, her contributions laid a solid groundwork for downstream integration, accelerating onboarding and enabling future CI/CD workflows. Technologies likely included Git, YAML, and shell scripting.