{"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-hg1tg4gi","versions":[{"created_at":"2026-06-04T05:54:46Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.6→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":"0f4f361b71f5a9e7b56210a6741d5aa5d7ed8ec6c909f4218315c0657ac1e642","version":10},{"created_at":"2026-06-04T04:56:36Z","element_count":72,"note":"GA batch-improve 2026-06-04: 総合 52.4→93.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 93.6 (美 93 環 100 楽 100))","saved_by":"editor","sha256":"7661d70e8ac21b69b8cc10ed053a48dc3e29ad3dc55a68dba8c9d009faf95b53","version":9},{"created_at":"2026-06-04T04:56:36Z","element_count":24,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"db098546fa6fcef5476cc319d2a2e22367a661cec68b8d24b5a67e9ac1654f76","version":8}]}