{"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-zx1zutm6","versions":[{"created_at":"2026-06-04T17:00:39Z","element_count":77,"note":"polish: batch-improve-100 2026-06-04 (92.0->96.2)","saved_by":"editor","sha256":"1350e324c52582ba4d14661f9bbca73d45184be02bda75ba01af79e1aa1131b0","version":11},{"created_at":"2026-06-04T05:55:56Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 92.0→92.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 92.0 (美 100 環 97 楽 100))","saved_by":"editor","sha256":"8bf580369ba069585cda3a0f040ef9d1ecdb40d97d6837ce1c07304f1592b7d5","version":10},{"created_at":"2026-06-04T04:55:14Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 62.6→92.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 92.0 (美 100 環 97 楽 100))","saved_by":"editor","sha256":"14d48e6754060f4668661ee56e01cab34318bfbbd112294b6885ece4b1cd06ac","version":9},{"created_at":"2026-06-04T04:55:14Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"b7941f3012537915c6bdc27e82f482690f57705914948f007709ae972debecbc","version":8}]}