February 2026: Delivered two high-impact changes across container-related repos, focusing on developer experience and robustness. In apple/container, updated debug instructions to replace 'launchd' with 'launchctl' in BUILDING.md to align docs with actual command semantics and prevent user confusion. In apple/containerization, hardened the container creation path by guarding against a missing ipv4Gateway, replacing a force unwrap with a guard statement and adding a unit test to verify the error handling. These changes reduce runtime errors, improve reliability of container orchestration, and enhance developer productivity through clearer guidance and better test coverage. Technologies demonstrated include Swift defensive programming (guard statements), unit testing, and documentation practices. Business value includes lower support load, fewer misconfigurations, and more stable deployments across environments.