{"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-avtn41az","versions":[{"created_at":"2026-06-04T05:51:10Z","element_count":99,"note":"GA diverse re-design 2026-06-04: 総合 99.0→99.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.0 (美 100 環 96 楽 100))","saved_by":"editor","sha256":"188b45cf864dc322eaa53ebb9ad2dfe0dac84109a2ce38c1c171a89776c14c0f","version":10},{"created_at":"2026-06-04T04:57:59Z","element_count":99,"note":"GA batch-improve 2026-06-04: 総合 45.5→99.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 99.0 (美 100 環 96 楽 100))","saved_by":"editor","sha256":"36e5beb5246d00330c3aab8171f18989a0c88acd2900078f0d88a490a9e5ba74","version":9},{"created_at":"2026-06-04T04:57:59Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"a4c57ec56c779d79afa4d6282936eee0c39da989c5f2a07a9ad979ebebd6b89f","version":8}]}