{"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-ev9c88zn","versions":[{"created_at":"2026-06-10T22:58:26Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy50261601→quote20894368 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"f91a66e747b47cb0e27e20d27998ca8b9bd05d2fbc274a6e9576e9bc8749ca23","version":9},{"created_at":"2026-06-10T20:07:27Z","element_count":89,"note":"5軸GA polish 60->93 by M5 (autonomous)","saved_by":"mcp","sha256":"fc50efe5bf4ab53d3f64b4c1cbf0fa3219e8f582f9f15f4e18db8544d63406e4","version":2}]}