Worked on the modell-aachen/modac-dev-machine-setup repository to deliver two features focused on improving data safety and development environment stability. Introduced a conditional copy mechanism for CLAUDE.md, ensuring existing files are not overwritten and user data remains protected. Updated package versions in plugin.json to maintain compatibility and reliability across the MODAC development environment. Employed shell scripting and configuration management techniques, utilizing bash and JSON to implement these changes. The work emphasized traceability through explicit commits, supporting easier review and rollback. These enhancements contributed to smoother developer workflows and more dependable environment setups, addressing both user experience and operational reliability.