{"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-nnh6woii","versions":[{"created_at":"2026-06-04T05:52:23Z","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":"43e760f3cabf230f221312d13fc7670b5b3c07a5bbd13c6c0290ce561eeb8cc8","version":4},{"created_at":"2026-06-04T04:55:24Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 61.6→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":"3c7a0e27d5ce823b38be0e3d8bf69c35f026fc006fee43fb247f1ebebb1e5668","version":3},{"created_at":"2026-06-04T04:55:24Z","element_count":29,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"14053c41e05980962c80f3a53da8cefa62b4054eb723ab4b4d624b469d61ff02","version":2}]}