Igor Serko contributed to the spacelift-io/spacectl repository by addressing a bug in the local-preview workflow, focusing on the correct handling of the --prioritize-run CLI flag. Using Go and CLI development skills, Igor ensured that the PrioritizeRun field accurately reflected user input, resolving misprioritization issues that previously affected workflow reliability. The targeted fix was implemented with minimal code changes, reducing risk and supporting faster iteration. By validating the solution against the relevant code paths, Igor improved the predictability and reliability of local-preview for developers. This work demonstrated careful attention to detail and a methodical approach to problem-solving in Go.