Dylan Collins enhanced the harness/harness-schema repository by expanding its schema definition to support more granular Mend security scanning options within pipeline configurations. Using YAML, Dylan introduced new enum values for step types, enabling teams to specify 'sast', 'sca', or 'container' scans as needed. This targeted schema update improved both the configurability and compliance fit of security pipelines, allowing for finer control and faster incident response. Throughout the process, Dylan demonstrated careful change-tracking and adherence to conventional commit messaging, ensuring clear documentation of the new Mend configs feature. The work reflects focused depth in schema design and security pipeline integration.