{"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-ajpf2d9s","versions":[{"created_at":"2026-06-04T05:55:13Z","element_count":70,"note":"GA diverse re-design 2026-06-04: 総合 93.5→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":"30dbe9591e026590d48df032e800eec8d1ed271ea7ce6e53f1b27e2fdf33bbe2","version":10},{"created_at":"2026-06-04T04:56:38Z","element_count":72,"note":"GA batch-improve 2026-06-04: 総合 52.1→93.5 (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 93.5 (美 93 環 100 楽 100))","saved_by":"editor","sha256":"c35d64a5af639120bffbcfb77f3399627d756c7ee96c8aa5bf8104e75923243a","version":9},{"created_at":"2026-06-04T04:56:38Z","element_count":24,"note":"snapshot: batch-improve 2026-06-04 改善前の旧設計 (復元用)","saved_by":"editor","sha256":"80ed3fed149891dd90526e6029d04e7415794c6394c353df496125258dc669e1","version":8}]}