ADR-003: Branded types for compile-time identity safety at zero runtime cost. ADR-004: On-demand bestiary via compact index + IndexedDB cache, avoiding distribution of copyrighted content. ADR-005: All quality gates at pre-commit for tight agent feedback loops, with analysis of per-change hooks as a future option. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>