{"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-g4-ys1qw8e7","versions":[{"created_at":"2026-06-04T16:59:50Z","element_count":81,"note":"polish: batch-improve-100 2026-06-04 (94.6->99.6)","saved_by":"editor","sha256":"7e6a84591ee1a87ea65a3aaa30dbdf6177ec71f70215a150d0b24150a7bf1f3d","version":5},{"created_at":"2026-06-04T05:52:28Z","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":"f97e34bc5b0db354c4d51c3397e6fce50befcafac8b05f8ee9074f71d09fa6a4","version":4},{"created_at":"2026-06-04T04:59:09Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 38.2→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":"c6452bb2eb4fc4a9c9c0d56a6c42093f23850eddfbcc8e4bf78d58f90ee6e65c","version":3},{"created_at":"2026-06-04T04:59:09Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"62e417c502a1088c0320be43db5069b06d71ce1f278033e38c56ebba570bd1cc","version":2}]}