Enhanced test coverage includes `repr` methods, model functionality, and validation logic for key models like `GiftItem`, `GiftCategory`, `EventMedia`, `RSVP`, and `GiftPurchase`. Refactored and added fixtures to support comprehensive testing scenarios. Addresses validation for gift reordering and updates `EventMedia` representation format for consistency.
Introduced comprehensive test coverage for GiftItem, GiftCategory, and GiftPurchase models to validate core functionality such as creation, updates, deletions, and derived properties. Also updated the `total_gifts` method in `GiftCategory` to calculate the total requested quantity rather than the count of gifts.
