{"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-0z6giapz","versions":[{"created_at":"2026-06-22T06:18:41Z","element_count":85,"note":"5軸GA polish 44->98 by M5 (autonomous)","saved_by":"mcp","sha256":"2898933288815ff572868d7eb74157071b5a094dadfdd5e1f367146b8c6c4632","version":3},{"created_at":"2026-06-22T06:15:14Z","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":"5316d8eda5460ecb18e42830de54dd849446a95d67e76d8daae1723cb5d1ae93","version":2},{"created_at":"2026-06-22T06:15:14Z","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}]}