Plan, run and roll back a Kubernetes minor-version upgrade, EKS first. Finds removed APIs in Git, rendered Helm charts and the live cluster with pluto and EKS upgrade insights, checks add-on compatibility (VPC CNI, CoreDNS, kube-proxy, Karpenter, Flux, KEDA, admission webhooks) against the target version, finds PodDisruptionBudgets that block node drains, plans the node rotation per pool, and picks the right rollback, including EKS one-step version rollback within 7 days or a blue/green cluster. Use when asked to "upgrade the cluster to 1.x", "what breaks if we upgrade", "find deprecated APIs before the upgrade", "why is the node drain stuck", or "roll back the EKS upgrade". One PR diff with a deprecated API → /platform-skills:pr-review. Karpenter's own upgrade → /platform-skills:karpenter.