cluster administration

A bash-first playbook for AI on Kubernetes: install kubectl/Helm/jq and aliases; enable NVIDIA GPUs via container toolkit and device plugin; autoscale CPU paths, prioritize GPU inference, and pair with cluster autoscaling; ship models safely with Helm canaries, PDBs, and rollbacks; add Prometheus/Grafana + DCGM for GPU observability; enforce quotas and isolated GPU pools; and ready it for GitOps.