During April 2025, Whoemoon enhanced the tailscale/github-action repository by implementing CI artifact caching for Tailscale binaries on both Linux and Windows platforms. The solution incorporated dynamic SHA-256 checksum verification, selecting the correct checksum based on artifact version and architecture to ensure cache integrity. This approach leveraged Bash scripting and GitHub Actions workflows, focusing on maintainable code and robust cross-OS compatibility. By stabilizing caching paths and hardening checksum logic, Whoemoon’s work improved CI run speed, increased cache hit rates, and strengthened artifact security. The project demonstrated depth in CI/CD, caching strategies, and secure automation within a production engineering context.