{"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-p3dkltn6","versions":[{"created_at":"2026-07-08T06:05:45Z","element_count":84,"note":"5軸GA polish 43->97 by M5 (autonomous)","saved_by":"mcp","sha256":"bfb2762adcba88e3b2896c9d5074e54ad0c7969c2e92027b6783b6aa47678a0a","version":3},{"created_at":"2026-07-08T05:56:27Z","element_count":126,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"377288134b2934a88fb9811ca65ef61282e3e8e3a99ea72e9d48b4471fad2c7c","version":2},{"created_at":"2026-07-08T05:56:27Z","element_count":126,"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}]}