{"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-w0bc7xcd","versions":[{"created_at":"2026-06-04T05:51:17Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 98.7→98.7 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.7 (美 100 環 99 楽 100))","saved_by":"editor","sha256":"34a3db247b346ad84633e5557569a94b833ce0befb62fb9ce0d82fc9987d8207","version":10},{"created_at":"2026-06-04T04:58:06Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 45.3→98.7 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 98.7 (美 100 環 99 楽 100))","saved_by":"editor","sha256":"e80479ddfa1f880ce9d4d9f0d225c71a9cd61d09764249257f06cd342f9123b9","version":9},{"created_at":"2026-06-04T04:58:06Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"90ec360e318bfc963fc4560d6d282889eea794cf0e10a4577c58e8345c02391b","version":8}]}