During July 2025, Felix Xu focused on codebase maintenance within the mskcc-omics-workflows/modules repository, specifically removing the Calculate Noise module to streamline the project and reduce maintenance overhead. He reverted the module’s initial commit, deleting its Groovy main script, environment configuration in YAML, metadata, and associated tests. This targeted cleanup eliminated dead code, reduced the test surface, and improved build stability, ensuring the repository remained robust after the change. Felix applied his skills in module management, Nextflow, and version control to assess the impact of the removal, maintaining CI hygiene and setting a clearer foundation for future workflow improvements.