During April 2026, contributed to the nf-core/modules repository by migrating the anndata/getsize module to a topic-channel architecture, focusing on enhanced structure and snapshot-based output validation. This work involved implementing a template-driven migration process, adding snapshot assertions to both test stubs and the main test suite, and applying linting and continuous integration hygiene improvements, particularly in meta.yml. Utilizing Nextflow, Groovy, and YAML, the migration established a scalable, event-driven data-processing foundation for downstream bioinformatics pipelines. The approach improved test reliability and maintainability, ensuring that future module development within nf-core/modules benefits from robust validation and streamlined CI practices.