{"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-4sihclyp","versions":[{"created_at":"2026-06-13T16:16:23Z","element_count":72,"note":"5軸GA polish 46->96 by M5 (autonomous)","saved_by":"mcp","sha256":"05b6608d1c13d98869ba521dc91ce3ff8b36e7f503d40fe00f1862d030f88ccf","version":3},{"created_at":"2026-06-13T16:02:05Z","element_count":130,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"8f24345d9f32a612d41d8d92f9edf4d28acf0a67aef255567ab4e0df238d3477","version":2},{"created_at":"2026-06-13T16:02:04Z","element_count":130,"note":"言葉から生成: LDK+主寝室+子供室+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}