During April 2025, Felix Piedallu focused on improving manifest validation in the YunoHost/apps repository by addressing a schema bug that affected boolean type handling. He identified and corrected the manifest schema definition, changing the type from 'bool' to 'boolean' to ensure accurate validation and prevent parsing errors during deployments. Working primarily with JSON schema and validation logic, Felix’s update reduced deployment risks and improved configuration reliability for users provisioning apps. His work demonstrated careful debugging and clear communication through precise commit documentation. This targeted fix, though limited in scope, contributed to a more stable and predictable deployment process for YunoHost.