{
  "title": "基幹刷新計画 — 設計・開発・UATの連鎖が本番日を左右する",
  "subtitle": "2026年度 基幹システム刷新計画（暦日ベース）",
  "tasks": [
    { "id": "requirements", "label": "要件定義", "start": "2026-04-01", "end": "2026-04-14", "owner": "業務改革室", "progress": 100, "note": "対象業務42プロセスのTo-Be要件を確定" },
    { "id": "design", "label": "基本設計", "start": "2026-04-15", "end": "2026-05-08", "owner": "IT企画", "progress": 80, "dependencies": ["requirements"], "note": "主要IF 18本と権限モデルを設計" },
    { "id": "build", "label": "開発・単体試験", "start": "2026-05-11", "end": "2026-06-19", "owner": "開発ベンダー", "progress": 45, "dependencies": ["design"], "note": "重要経路。遅延1日がUAT開始へ直結" },
    { "id": "migration", "label": "移行準備", "start": "2026-04-27", "end": "2026-06-05", "owner": "データ移行班", "progress": 60, "dependencies": ["requirements"], "note": "マスタ12種のクレンジングと移行リハーサル" },
    { "id": "uat", "label": "UAT", "start": "2026-06-22", "end": "2026-07-10", "owner": "業務部門", "progress": 0, "dependencies": ["build", "migration"], "note": "主要シナリオ86件を業務部門が検証" },
    { "id": "cutover", "label": "本番切替", "start": "2026-07-13", "end": "2026-07-15", "owner": "統合PMO", "progress": 0, "dependencies": ["uat"], "note": "停止許容時間6時間以内で切替" }
  ]
}