Marcel
050f2bc929
test(stammbaum): integration tests for relationship constraints
@DataJpaTest + Postgres Testcontainer; 7 cases per Sara blocker 1:
- addRelationship_stores_and_is_readable
- addRelationship_throws_409_when_duplicate (unique_rel)
- addRelationship_throws_409_when_circular_parent
- deleteRelationship_throws_403_when_rel_belongs_to_different_person
- deleteRelationship_succeeds_for_symmetric_type_from_either_side
- setFamilyMember_true_makes_person_appear_in_network
- delete_person_cascades_to_relationships
Service now uses saveAndFlush so the unique_rel violation surfaces
synchronously inside the @Transactional method (otherwise the
DataIntegrityViolation fires at commit time, outside the try-catch).
Unit-test mocks updated accordingly.
Backend suite: 1406/1406 green.
Refs #358.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>