During July 2025, Felix Xu focused on codebase maintenance within the mskcc-omics-workflows/modules repository, specifically removing the Calculate Noise module to streamline ongoing development. He reverted the module’s initial commit, deleting its Groovy main script, environment configuration, metadata, and associated tests. This targeted cleanup, managed through Git-based version control, eliminated dead code and reduced the test surface, directly improving build stability and lowering maintenance risk. Felix applied skills in module management, Nextflow, and shell scripting to ensure repository integrity after the change. His work provided a clearer platform for future improvements and demonstrated careful change impact assessment and CI hygiene.