The rows this skill keeps in the Markers table of the stack file (docs/architecture/stack.md). Copy them exactly; the generic business rule row (All) belongs to /stack and is not repeated here.

Layer	Skill	Kind	Marker to grep for
Persistence	jpa-persistence	Code	`// UC-XXX BR-YYY:` directly above the repository query method, `exists…`/`count…` check, or `@Version` field that enforces the rule
Persistence	jpa-persistence	Name	`@Entity` class named after the entity model (`<Entity>`, or `<Entity>Entity` in a hexagonal adapter); Spring Data repository `<Entity>Repository` or `<Entity>JpaRepository`; adapter `<Entity>RepositoryImpl` implementing the outbound port