stack-profile

The single stack-definition point — what this team runs today, which stacks it authors versus only supports, the stay-in-lane rule, and the platform boundary. Load before editing code in a support-only stack (Java/JVM), before recommending any runtime, tool, or infrastructure change, and when choosing between observability backends. Triggers: "what's our stack", "should we use X for this", "can we move this to Kubernetes / the cloud", "which backend do I query". This skill bundle changes when the ground shifts.