{"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-j2kqpq6o","versions":[{"created_at":"2026-06-13T21:24:52Z","element_count":72,"note":"5軸GA polish 44->97 by M5 (autonomous)","saved_by":"mcp","sha256":"d76c6c4e215ae4fd32eaa4ac8dd4e0c63a2fb66e2032f4f037b12069dc085d80","version":3},{"created_at":"2026-06-13T21:18:00Z","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":"ec2cb6f592db80d1047ee40ac40f2c472369ac244cddcb80017043567d1824b3","version":2},{"created_at":"2026-06-13T21:18:00Z","element_count":105,"note":"言葉から生成: LDK+主寝室+子供室2+浴室+和室+収納","saved_by":"mcp:create","sha256":"","version":1}]}