{"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-zbmw3bvs","versions":[{"created_at":"2026-06-04T05:52:10Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 96.9→96.9 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 96.9 (美 100 環 97 楽 100))","saved_by":"editor","sha256":"c5a45f7a871056c068d006cbc0167ff5fdba0e33ee9ec3337af4bd34242e8c2c","version":10},{"created_at":"2026-06-04T04:53:10Z","element_count":98,"note":"GA batch-improve 2026-06-04: 総合 71.6→96.9 (中庭ロの字・吹抜 ピアノ室 PV 雨水 天窓 / 適応度 96.9 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"da04e288238bc091b25ad662ad1b6b7f2c195854489dae8128439f5d30636b2e","version":9},{"created_at":"2026-06-04T04:53:10Z","element_count":66,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"6f7f14589a54cf9d954704fd5077c769eacefe05eeca53da3d8d61bfb9d7f99e","version":8}]}