Add database tables for animal tracking: - animal_registry: main snapshot table with all animal attributes - live_animals_by_location: denormalized view for fast roster queries - animal_aliases: merge tracking for when animals are discovered to be same Includes Pydantic models and comprehensive tests for all constraints. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>