{"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-i6gz1fal","versions":[{"created_at":"2026-06-04T05:53:06Z","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":"c8f649aa11326936fb49b2c9085ca0066659eadc865e44c00de3ad43855bc49a","version":10},{"created_at":"2026-06-04T04:55:58Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 58.6→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":"fbccc89c482c6195cc1740a447edae8affb90d2540280de013f8aa25164e3503","version":9},{"created_at":"2026-06-04T04:55:58Z","element_count":24,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"94819f56bd4dc3d202a98ea61f7a79b4c383ffa7dde4452c04d92a7127778c09","version":8}]}