Developed and delivered two targeted features across Cockatrice/Cockatrice and 9001/copyparty, focusing on environment management and image processing. For Cockatrice/Cockatrice, implemented a reproducible development environment using Nix, providing a standardized shell configuration that manages dependencies, build tools, and debugging utilities to streamline onboarding and ensure consistency for all contributors. In 9001/copyparty, expanded Python-based image ingestion capabilities by adding CR3 RAW image format support to the rawpy decoding options, enabling direct handling of Canon CR3 files and reducing manual conversion steps. Work emphasized maintainability, reproducibility, and compatibility, leveraging Nix, Python, and command line interface skills to address project needs.