This skill should be used when the user says "save infra plan", "save infrastructure plan", "structure infra plan", "create infra project", "finalize infra plan", "arn infra save plan", "infra save plan", "save change plan", "structure infrastructure plan", "finalize infrastructure plan", "arn-infra-save-plan", or wants to convert a PLAN_PREVIEW_INFRA_*.md into a structured project directory with infrastructure-specific templates, report templates, and progress tracking.