Timmit Auth

Phase 1 Milestone 0 foundation

This app is the standalone auth-service shell for the Timmit shared authentication platform. Milestone 0 stops at the repository, infrastructure, and module foundation so Milestone 1 can start on a stable auth core.

workspace scaffolding and package boundaries
validated runtime configuration
Prisma ownership in @timmit-auth/db
health and readiness endpoints
structured logging foundation
internal auth-domain module boundaries