{"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-sree1bcs","versions":[{"created_at":"2026-06-10T22:53:23Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote23180049 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"e8f504f3e51e2a29b6ba32dce26e1b30794f511c687eaba1deb3431d872dcc1c","version":10},{"created_at":"2026-06-10T16:55:13Z","element_count":88,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"d670baca2266d8c762c2d424b73d611a55379f28a27f6fbcd1c486a51dd11fde","version":2}]}