This skill should be used when the user says "infra change spec", "infrastructure change", "specify infrastructure change", "change spec", "arn infra spec", "describe infra change", "what infrastructure needs to change", "infra spec", "spec this infra change", "write infra spec", "infrastructure change specification", "create infra change spec", "upgrade to pipeline", "convert to pipeline", or wants to iteratively develop an infrastructure change idea into a well-formed specification through guided conversation, or wants to upgrade existing interactive IaC artifacts into the structured change pipeline.