refactors

backend/auth.py

@@ -9,6 +9,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 
 from database import get_db
 from models import Permission, User
+from repositories.user import UserRepository
 from schemas import UserResponse
 
 SECRET_KEY = os.environ["SECRET_KEY"]  # Required - see .env.example
@@ -45,8 +46,9 @@ def create_access_token(
 
 
 async def get_user_by_email(db: AsyncSession, email: str) -> User | None:
-    result = await db.execute(select(User).where(User.email == email))
-    return result.scalar_one_or_none()
+    """Get user by email (backwards compatibility wrapper)."""
+    repo = UserRepository(db)
+    return await repo.get_by_email(email)
 
 
 async def authenticate_user(db: AsyncSession, email: str, password: str) -> User | None: