Design, scaffold, and review Harness CI/CD pipelines as production-ready YAML. Use this skill whenever the user mentions building, creating, modifying, or reviewing a Harness pipeline, CI stages, CD deploy stages, approval gates, rollback strategies, triggers, pipeline variables, input sets, or multi-service/multi-environment deployments. Also trigger when the user says "I want to deploy X to Y using Harness" or asks to "add a chaos step", "add a verification step", or "add an approval" to a pipeline.