{"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-u950ujze","versions":[{"created_at":"2026-07-13T10:23:55Z","element_count":73,"note":"5軸GA polish 39->91 by M5 (autonomous)","saved_by":"mcp","sha256":"71357e1bce801661fb5399fb9beaa4dbb449c0695ea4eb77f59b3f093cd9cdf4","version":3},{"created_at":"2026-07-13T10:12:19Z","element_count":101,"note":"loop3: 設計時延床 52.7㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"1bb23e21d5dfa3e197225687ca44d2a78f7de8740b9eca7eac633249b371d475","version":2},{"created_at":"2026-07-13T10:12:19Z","element_count":101,"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}]}