Charlelie Chandelier worked on the betagouv/service-national-universel repository, focusing on improving the reliability of refund information displays for young volunteers. Using JavaScript and front end development skills, Charlelie addressed a bug where incomplete organization data could appear in admin and Phase 2 views. The solution involved conditionally hiding the 'Renseigné par' section when the organization name was missing, thereby preventing ambiguous or partial data from being shown to users. This targeted fix enhanced data integrity and user trust in the refund workflow. The work demonstrated careful attention to user experience and data quality, though it was limited in scope and duration.