{"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-vqt0lcmu","versions":[{"created_at":"2026-06-10T22:55:05Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy87379776→quote20826055 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"76a7cec6d9e8636404eea954fa8deb432ac8729f5da2350de110b1c59f1e96de","version":10},{"created_at":"2026-06-10T17:56:44Z","element_count":84,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"bb54376944c0dae69b067696f03f7c9d11c4933e849b43a808e6a90a7503d6ce","version":3}]}