{"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-ichlx4ms","versions":[{"created_at":"2026-07-03T06:03:15Z","element_count":84,"note":"5軸GA polish 44->98 by M5 (autonomous)","saved_by":"mcp","sha256":"2bc5160e173d1041dd89fcfd1952cbb131827ea470fd1bcb085c5866a40610dc","version":3},{"created_at":"2026-07-03T05:58:58Z","element_count":134,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"a81e47db2cd37b9bca2e6a92f8a35eac3ab9dcb3e575a1f854a619c7a5a03efe","version":2},{"created_at":"2026-07-03T05:58:58Z","element_count":134,"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}]}