{"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-p8nugg86","versions":[{"created_at":"2026-06-16T06:11:53Z","element_count":83,"note":"5軸GA polish 46->98 by M5 (autonomous)","saved_by":"mcp","sha256":"9131b4232a9ce3a6dd7f45a06d7bf2ec1d6372e63ebe7d4de8e18d20d06eee79","version":3},{"created_at":"2026-06-16T06:03:12Z","element_count":105,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"532ea7c12a4c5beb8fbd275aa722fccf79f460a01a9a9b84a93bcdb364f623d6","version":2},{"created_at":"2026-06-16T06:03:09Z","element_count":105,"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}]}