During their two-month contribution to the argoproj/argo-cd repository, Coco focused on backend reliability and operational clarity. They enhanced RBAC reconciliation by modifying the logic to skip namespace checks for cluster-scoped resources, reducing reconciliation errors in multi-namespace Kubernetes environments. Using Go and Kubernetes RBAC, Coco implemented automated tests to validate these changes, ensuring robust error handling. In addition, they improved synchronization health checks to detect resource deletions, preventing infinite waiting loops, and refined error messaging for authentication reconciliation. Coco also updated cosign installation documentation in Markdown, supporting smoother onboarding. Their work demonstrated thoughtful problem-solving and attention to operational detail.