redesing product lists

backend/schemas.py

@@ -117,6 +117,7 @@ class ProductInEvent(BaseModel):
     product_id: int
     amount: float = Field(..., gt=0)
     price: float = Field(..., ge=0)  # Price at the time of this shopping event (allow free items)
+    discount: bool = False  # Whether this product was purchased with a discount
 
 class ProductWithEventData(BaseModel):
     id: int
@@ -128,6 +129,7 @@ class ProductWithEventData(BaseModel):
     weight_unit: str
     amount: float  # Amount purchased in this event
     price: float   # Price at the time of this event
+    discount: bool  # Whether this product was purchased with a discount
     
     class Config:
         from_attributes = True