Worked on the suzuki-shunsuke/tfaction repository to address a critical issue in the tfmigrate workflow, focusing on improving CI/CD reliability. Implemented a targeted fix by quoting bare boolean values in YAML configuration files, ensuring compatibility with cel-js evaluation and preventing job execution failures in tfmigrate-plan, tfmigrate-apply, and drift-apply steps. This DevOps effort reduced pipeline flakiness and enhanced the stability of migration runs for both internal and customer-facing processes. The solution was co-authored and thoroughly documented to support team knowledge sharing, leveraging expertise in YAML and workflow automation to deliver a more robust continuous integration environment.