refactors

backend/repositories/__init__.py

@@ -1,6 +1,17 @@
 """Repository layer for database queries."""
 
+from repositories.availability import AvailabilityRepository
+from repositories.exchange import ExchangeRepository
+from repositories.invite import InviteRepository
 from repositories.price import PriceRepository
+from repositories.role import RoleRepository
 from repositories.user import UserRepository
 
-__all__ = ["PriceRepository", "UserRepository"]
+__all__ = [
+    "AvailabilityRepository",
+    "ExchangeRepository",
+    "InviteRepository",
+    "PriceRepository",
+    "RoleRepository",
+    "UserRepository",
+]