{"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-2-y7p7rf4b","versions":[{"created_at":"2026-06-04T16:59:53Z","element_count":81,"note":"polish: batch-improve-100 2026-06-04 (93.6->97.9)","saved_by":"editor","sha256":"91f2312382361b0a720a7fa62774071fdaf7e523d7685ca5c7898d5c9512df12","version":11},{"created_at":"2026-06-04T05:55:05Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.6→93.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"b6f83337a5cf79847a972df52e9d4172a8cfefb61d95b30de94450474e099127","version":10},{"created_at":"2026-06-04T04:53:59Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 68.0→93.6 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.6 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"0bd889b06fb7ac17f5d75c04a642f12d4f419923de2c06b41ca706bb1adf391d","version":9},{"created_at":"2026-06-04T04:53:59Z","element_count":31,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"7d566edd38b3632d2dc9f566a6a9ad7288e60442773ebd964a62ebf9190f48d6","version":8}]}