{"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-usmlxgpz","versions":[{"created_at":"2026-06-04T05:55:21Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.3→93.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"e3cd5c8d01a19b0505ae77c20801c8188b9d1be6b4f5580b5a9bdd0fb9e4f1e3","version":10},{"created_at":"2026-06-04T04:54:00Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 67.9→93.3 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 93.3 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"7c94b494be2b627e8178c8527812197eacbed0c82fdd932904df919047445bac","version":9},{"created_at":"2026-06-04T04:54:00Z","element_count":45,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"a8f9b867ae8138281a1ad4004e25037948e924a265f78080bc81533d7e8d690f","version":8}]}