{"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-nyy9n98c","versions":[{"created_at":"2026-06-13T20:29:11Z","element_count":74,"note":"5軸GA polish 43->94 by M5 (autonomous)","saved_by":"mcp","sha256":"3d3035bbf7160f68817c3e998908e5c42671cf1568ba672a695f3c927448332a","version":3},{"created_at":"2026-06-13T20:22:35Z","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":"05a01938af316e25fa3bc0fe4e13dba5fbdd99ff05790770b4af87541cbe28e6","version":2},{"created_at":"2026-06-13T20:22:34Z","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}]}