{"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-p9bw154k","versions":[{"created_at":"2026-06-10T22:52:45Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote19396944 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"7b6c74058a3a8bbebff1e8ff0b74e9acf43d7893aa6492ab509e6f5fe3e04673","version":11},{"created_at":"2026-06-10T15:53:06Z","element_count":91,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"4f231f76b0366f58c66d47c2ff732f8f58c0bf0db8e75f7ef24e58e40723584e","version":3}]}