{"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-q1k2ba6g","versions":[{"created_at":"2026-06-15T06:08:53Z","element_count":73,"note":"5軸GA polish 44->93 by M5 (autonomous)","saved_by":"mcp","sha256":"3bf33cddd7ca9681ed1f28322f8868073de4fcf9e4b7be1c0c15ebc3671e8e71","version":3},{"created_at":"2026-06-15T06:03:56Z","element_count":119,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"737a4a04a0f22f860f4f8a0090e401bdf768b21d6cfaa429e106a38dd691fb85","version":2},{"created_at":"2026-06-15T06:03:56Z","element_count":119,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}