{"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-kju0u74g","versions":[{"created_at":"2026-06-10T22:52:44Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote20180810 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"59dac722504c98b5a2dcd4bbf36926bb6f69fe8c28313bfd062def23df0fa77c","version":12},{"created_at":"2026-06-10T15:36:35Z","element_count":91,"note":"5軸GA polish 58->98 by M5 (autonomous)","saved_by":"mcp","sha256":"40d30ff00e49ffcdcb6eaa21d98db1c57f6598776bfd7169fe1750d6b1d87d80","version":4}]}