{"note":"bim_versions 導入後の保存のみ記録 (それ以前は bim_canonical 上書きで履歴なし)","ok":true,"slug":"u-house-ngo6sxsl","versions":[{"created_at":"2026-06-04T05:53:06Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.6→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"f97e34bc5b0db354c4d51c3397e6fce50befcafac8b05f8ee9074f71d09fa6a4","version":10},{"created_at":"2026-06-04T04:54:52Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 64.9→94.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"228317e8b4529adac38dbeacf8cc765188103d8717424b6babd926ccb1e6a714","version":9},{"created_at":"2026-06-04T04:54:52Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"b3b2f749620b47694c31597e08b8b0e094fa86faefbce576c958ae02ce70aa48","version":8}]}