{"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-ehfq0jzw","versions":[{"created_at":"2026-07-13T19:41:39Z","element_count":70,"note":"5軸GA polish 41->92 by M5 (autonomous)","saved_by":"mcp","sha256":"b5d433a556f4542b5152faa48d36f99af83803d23fcbd0c1ebd99a838d65ce54","version":3},{"created_at":"2026-07-13T19:27:36Z","element_count":86,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"0a616fef64796a3aec139802022b16381a14e1e3b511f7fefb9d4ac9a5c16e24","version":2},{"created_at":"2026-07-13T19:27:36Z","element_count":86,"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}]}