Vietnamese genealogy has structures Western platforms don't support: lunar calendars, hierarchical clan branches, auto generation numbering, and a 60-year zodiac cycle for date notation.

AncestorTree handles these. Built in 7.5 sprints over 24 hours by orchestrating 8 AI agents through TinySDLC + Claude Code.

Stack: Next.js 16 + React 19 + TypeScript + Supabase + Vercel. $0/mo.

13 PostgreSQL tables. 77 documented requirements. 4 permission roles enforced via RLS. DFS-based ceremony duty rotation. Family relations panel (parents, siblings, spouses, children per profile). Hierarchical tree layout. Branch filter with shareable URLs (?root=id). Tree-scoped editor: users linked to their person, edits restricted to their subtree — enforced by a recursive PostgreSQL CTE in RLS.

Built with MTS-SDLC-Lite: stage gates, design review before code. Same agents without governance = plausible but broken. With governance = production-ready in 1 day.

MIT licensed. Fork + deploy in ~30 min.

Feedback welcome.