feat: work shifts history

models/expense.py

@@ -29,7 +29,7 @@ class Expense(BaseModel):
     amount: Mapped[float] = mapped_column()
 
     created_by_user_id: Mapped[int] = mapped_column(ForeignKey("users.id"), nullable=False)
-    created_by_user: Mapped["User"] = relationship(foreign_keys=[created_by_user_id])
+    created_by_user: Mapped["User"] = relationship(foreign_keys=[created_by_user_id], lazy="selectin")
 
     tags: Mapped[list["ExpenseTag"]] = relationship(
         secondary=expenses_expense_tags,

models/work_shifts.py

@@ -27,4 +27,5 @@ class WorkShift(BaseModel):
     user: Mapped["User"] = relationship(
         "User",
         back_populates="work_shifts",
+        lazy="selectin",
     )