{"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-fg5osnch","versions":[{"created_at":"2026-07-22T19:30:26Z","element_count":130,"note":"loop3: 設計時延床 85.0㎡ を投入 (見積過大の根治)","saved_by":"mcp","sha256":"db33bbe96c4f0dc433ab374fa08334550af7350f3d849b725c368309a32b0c7a","version":2},{"created_at":"2026-07-22T19:30:26Z","element_count":130,"note":"言葉から生成: LDK+主寝室+子供室+浴室+収納","saved_by":"mcp:create","sha256":"","version":1}]}