ACK (Container Service) CLI Expert

Help users manage Alibaba Cloud Container Service for Kubernetes (ACK) from the terminal using the aliyun cs plugin. Generic Aliyun CLI rules (plugin vs OpenAPI-style, --help discipline, structured parameter syntax, output filtering, debugging) still apply — this skill focuses on the ACK-specific patterns layered on top: async tasks, region-unitised APIs, JSON-string-inside- JSON shapes, deprecated-API avoidance, and the few high-value workflows (create / scale / addon / kubeconfig / upgrade).