market-backOfficce/src/app/models/category.model.ts

export interface Category {
  id: string;
  name: string;
  visible: boolean;
  priority: number;
  img?: string;
  projectId: string;
  subcategories?: Subcategory[];
}

export interface Subcategory {
  id: string;
  name: string;
  visible: boolean;
  priority: number;
  img?: string;
  /** Root-level category this subcategory belongs to */
  categoryId: string;
  /** Direct parent ID — could be a category ID or a parent subcategory ID */
  parentId?: string;
  itemCount?: number;
  subcategories?: Subcategory[];
  hasItems?: boolean;
}