{"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-jxsrlg29","versions":[{"created_at":"2026-06-04T05:53:29Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 94.5→94.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"d08b0bd9bc039164138c172765a676d650e032e1a1046c6b63e5015aabc024c2","version":10},{"created_at":"2026-06-04T04:59:16Z","element_count":70,"note":"GA batch-improve 2026-06-04: 総合 37.5→94.5 (中庭ロの字・吹抜 縁側 ピアノ室 PV 雨水 天窓 / 適応度 94.5 (美 100 環 100 楽 100))","saved_by":"editor","sha256":"6357a0d81d0abf26355f87bdf3b1b5c0304c77fd2e0a2c072eb475036316967c","version":9},{"created_at":"2026-06-04T04:59:16Z","element_count":19,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"0d18e4f3648ad9e9fcaacf573215f35cb3637263454b812068c58dfd8b00d98e","version":8}]}