{"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-v6vdd6ka","versions":[{"created_at":"2026-06-04T05:53:46Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.0→94.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.0 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"dae5e272644a1bb549f32646973e912af9b7565da329a287f21085f8ce27f2f9","version":10},{"created_at":"2026-06-04T04:54:55Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 64.6→94.0 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.0 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"f2e41d918d7687ee540c594c85a75ba3fa5346601bbe113a5e87cf8f521cb945","version":9},{"created_at":"2026-06-04T04:54:55Z","element_count":29,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"1e6e5a0344c88ac522b99f42741dfe85782966850b3a04ef2c1ded701512a4a1","version":8}]}