{"id":"random-date-generator","engine":"core","category":"random","name":"ランダムな日付","fields":[{"key":"start","label":"開始値","type":"date","default":"2026-01-01","required":true},{"key":"end","label":"終了値","type":"date","default":"2026-12-31","required":true},{"key":"count","label":"個数","type":"number","default":5,"required":true,"min":1,"max":1000}],"sample":{"start":"2026-01-01","end":"2026-12-31","count":5}}