{"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-seoxrduo","versions":[{"created_at":"2026-06-14T06:20:37Z","element_count":90,"note":"5軸GA polish 44->95 by M5 (autonomous)","saved_by":"mcp","sha256":"e95dcd422aa9c2e7fa83c999239fe679359da4239e4d0ad088c135945d7e2d43","version":3},{"created_at":"2026-06-14T06:09:50Z","element_count":101,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"815dc9596980da9c81eb4e72259e2989cc2b18f491953b26095a5c90a7c4ea22","version":2},{"created_at":"2026-06-14T06:09:48Z","element_count":101,"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}]}