feat: work shifts by QR codes

models/auth.py

@@ -5,6 +5,7 @@ from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 from enums.user import UserRole
 from models.base import BaseModel
+from models.work_shifts import WorkShift
 
 if TYPE_CHECKING:
     from models.payroll import PayRate, PaymentRecord
@@ -91,6 +92,12 @@ class User(BaseModel):
         uselist=True,
         foreign_keys="PaymentRecord.user_id"
     )
+    work_shifts: Mapped[list["WorkShift"]] = relationship(
+        "WorkShift",
+        back_populates="user",
+        uselist=True,
+        foreign_keys="WorkShift.user_id"
+    )
 
 
 class Position(BaseModel):