Thomas Lenoir developed and enhanced CI workflows for the LedgerHQ/actions repository over a two-month period, focusing on scalable multi-package support and efficient dependency management. He introduced a working-directory input for CI actions using YAML and GitHub Actions, enabling flexible subpackage builds and releases that reduced manual configuration. In the following month, Thomas improved PDM initialization by implementing a cache-dependent path, streamlining dependency management and accelerating CI environment setup. His work leveraged CI/CD, DevOps, and caching strategies to improve reliability and maintainability. The features addressed workflow scalability and onboarding speed, demonstrating depth in automation and repository-wide process optimization.