{"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-yjork43s","versions":[{"created_at":"2026-06-10T23:23:55Z","element_count":70,"note":"5軸GA polish 54->96 by M5 (autonomous)","saved_by":"mcp","sha256":"2ce2ac6d09d058da9aad774f9d119c5bd108625acb683d6fec8813f52331028d","version":10},{"created_at":"2026-06-10T23:08:35Z","element_count":47,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"46bc686b824175204976b543bb16ae4aa7c546dabbfed275bd26f0fae1228b1e","version":7}]}