kaimyo-management/src/app/models/familytreenode.ts

import { Family } from "./family";
import { Kakocho } from "./kakocho";

export interface FamilyTreeNode {
  family: Family;

  kakocho?: Kakocho;   // ★追加（ここが核心）

  isDeceased: boolean; // ★追加

  spouses: FamilyTreeNode[];
  children: FamilyTreeNode[];
  parents: FamilyTreeNode[];
}