- Add PostgreSQL database with async SQLAlchemy - Add Alembic migrations for schema management - Add User, Role, UserPreferences, ApiKey models - Add auth endpoints: /auth/me, /auth/users, /auth/users/sync-from-authentik - Add token validation via Authentik userinfo endpoint - Add bulk user sync from Authentik admin API - Add database health check to diagnostics 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>