{"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-4izg6xj0","versions":[{"created_at":"2026-06-29T06:21:00Z","element_count":89,"note":"5軸GA polish 41->94 by M5 (autonomous)","saved_by":"mcp","sha256":"67021f9934298e4773e729a23268242fedd176301ed40a04d547ed423b315ff3","version":3},{"created_at":"2026-06-29T06:17:14Z","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":"6a0195ec0c97e4d7702ed5daa720d5193e912c61532d5f3c7bb892aa0da44453","version":2},{"created_at":"2026-06-29T06:17:14Z","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}]}