{"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-l6wbquqd","versions":[{"created_at":"2026-06-04T05:54:52Z","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":"1823ed4fc133a3601630dd6d1171b274996e21561be4d3a512b6c0f45bcc5e38","version":10},{"created_at":"2026-06-04T04:56:09Z","element_count":72,"note":"GA batch-improve 2026-06-04: 総合 57.3→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":"bb8fa16267afe0f33e0e65d46caeeb1eec8c4aadd6b12528da6fe70e3f0efc4a","version":9},{"created_at":"2026-06-04T04:56:09Z","element_count":20,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"b733bb71a2d52b719662cfbbf646a0773ce8288deb809f087962a064a398612a","version":8}]}