- MagicalObject: internal #health and #maxHealth now Health type
- HealingObject: constructor, create, and heal use Health value object
- MagicalWeapon: constructor, create, and use use Health value object
- DamageDealer and Healer interfaces: health: number -> health: Health
- magical-objects.spec.ts: all assertions use .health.value
- Run npm run checks: 0 errors, 70 tests passing