Anastasios Iliou enhanced the sj26/serena repository by developing a command-line interface feature that clarifies project path selection. Using Python and leveraging argument parsing skills, he introduced mutually exclusive flags for --project and --project-file, ensuring users cannot specify both and eliminating ambiguity in path resolution. This update normalized project path handling across different configurations, providing consistent behavior regardless of environment. The approach improved the maintainability and clarity of the CLI tooling, aligning with team standards and supporting future extensibility. Although focused on a single feature, the work demonstrated depth in CLI design and contributed to smoother automation and deployment workflows.