Worked on the Shopify/rails repository to address a bug in Active Storage’s handling of dependent attachments. Focused on refining the purge behavior for has_one_attached and has_many_attached associations, ensuring that attachments marked with dependent: :purge are fully purged rather than merely detached when a parent record is destroyed. Used Ruby and Ruby on Rails to implement and validate these changes, supporting correct operation of dependent: :purge, :purge_later, and :detach options. This work improved data integrity and lifecycle management for attachments, aligning deletion semantics with expected behavior and enhancing the reliability of back end systems managing file associations.