Since companions can only be baby or adult (not egg), egg-only items
like Shell Repair Kit should never appear in the companion flow.
Changes:
- Update resolveItemsForAction to use centralized canUseItemForStage
- Add item-stage validation in useBlobbiItemUse mutation
- Egg-only items are now filtered at both display and use layers
The filtering is now enforced by:
1. resolveItemsForAction - items won't appear in hanging items menu
2. useBlobbiItemUse - validation prevents use even if somehow displayed
filemon
2ad64bbca7