{"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-knfik3m4","versions":[{"created_at":"2026-06-10T22:59:39Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy52954560→quote21306726 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"20c3d6ef73450d7f693a8211877f0c4929b21105f44b192d2e4ccf3ba98651ae","version":9},{"created_at":"2026-06-10T20:38:19Z","element_count":71,"note":"5軸GA polish 60->92 by M5 (autonomous)","saved_by":"mcp","sha256":"3124c9395c637a63333b5e625e93fe7dacd79110b0a61d3c41ca93e1834d3fad","version":2}]}