In October 2025, Chris McClellan focused on stabilizing the core opacity pathway in the tardis-sn/tardis repository by delivering a targeted code cleanup. Using Python and leveraging skills in code refactoring and version control, Chris removed a duplicate OpacityStateNumba class from opacity_state.py, addressing potential conflicts in opacity computations and reducing long-term maintainability risks. Additionally, Chris updated author attribution metadata in .orcid.csv and .mailmap to ensure accurate contributor records. The work maintained full API compatibility, introduced no new features, and prioritized internal stability, reflecting a careful, detail-oriented approach to codebase hygiene and collaborative project management within the repository.