Each recipe appears at most once on the wishlist. Any profile can add,
remove, like, and unlike. Ratings and cooking log stay independent.
Data model: wishlist(recipe_id PK, added_by_profile_id, added_at)
wishlist_like(recipe_id, profile_id, created_at)
Why: 'das will ich essen' — family members pick candidates, everyone
can +1 to signal agreement, cook decides based on popularity.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
