{"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-theparishhouse-elx9ohha","versions":[{"created_at":"2026-07-29T19:32:56Z","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":"215fb4d6c59b099ef11d821e546a671f6f002aa819c6ea388432514ececdc433","version":2},{"created_at":"2026-07-29T19:32:56Z","element_count":126,"note":"言葉から生成: LDK+main bedroom+2 kids rooms+bathroom+storage","saved_by":"mcp:create","sha256":"","version":1}]}