{"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-b3d46hrt","versions":[{"created_at":"2026-06-04T16:59:57Z","element_count":63,"note":"polish: batch-improve-100 2026-06-04 (91.0->96.2)","saved_by":"editor","sha256":"fff5b3eac8df98a9c7563e713fae34bfaddeab97fa4c5fffc39fa480383fba45","version":11},{"created_at":"2026-06-04T05:56:14Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 90.3→91.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 91.0 (美 100 環 98 楽 100))","saved_by":"editor","sha256":"60752bdb3f9ed88a8721997cc308151a0db96f4067728b8ca22dd67311e212b1","version":10},{"created_at":"2026-06-04T04:58:41Z","element_count":72,"note":"GA batch-improve 2026-06-04: 総合 41.6→90.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 南面サンルーム / 適応度 90.3 (美 94 環 98 楽 100))","saved_by":"editor","sha256":"8cf2c62a0f3a9af9bd73319f94ec0c00d4abe42c125f01469e1354d8e91e8107","version":9},{"created_at":"2026-06-04T04:58:41Z","element_count":35,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"92e54ad763499d8388ae4f0e7cbcb9f92655276af515d454d10d81c36cc4df9d","version":8}]}