acea4a60f2
RelationToken enum (UP/DOWN/SPOUSE/SIBLING) with reverse(), and RelationshipInferenceService with: - Bidirectional adjacency map: PARENT_OF emits UP and DOWN, SPOUSE_OF and SIBLING_OF both directions. - Virtual SIBLING edges derived from shared parents — no SIBLING_OF row required for siblings to appear. - BFS with MAX_DEPTH=8. - 17-entry LABEL_MAP covering parent, child, spouse, sibling, grand*, great-grand*, uncle/aunt, niece/nephew, great-uncle/aunt, great-niece/ nephew, in-law parent/child, sibling-in-law (both paths), cousin_1. - "distant" fallback for any path not in LABEL_MAP. - Two-sided labels via path reversal. 18 unit tests written first against a stub; all 18 confirmed red, then green after implementation. PersonControllerTest's anonymous DTO updated for the new isFamilyMember() projection. Refs #358. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>