Install, configure, upgrade, troubleshoot, and manage Harness Delegates. Use this skill whenever the user mentions delegates, Harness agents, delegate selectors, delegate connectivity issues, installing a delegate on Kubernetes or Docker, delegate auto-upgrade, delegate profiles, delegate tags, delegate scoping, or when a pipeline fails with "No eligible delegates found". Also trigger when setting up a new cluster for Harness, configuring delegate RBAC, or managing delegate resource limits.