export interface CostProductDetail {
  productId: number;
  unitId: number;
  volume: number;
}

export interface Cost {
  id?: number;
  price: number;
  supplierId: number;
  products: CostProductDetail[]; // ← reemplaza productIds
  oneTimePurchase?: boolean;
  userId?: number;
  createdAt?: string;
  updatedAt?: string;
  deletedAt?: string | null;
}