{"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-jddagpsq","versions":[{"created_at":"2026-06-10T23:06:21Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy70239456→quote22448917 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"eea40780de6fbdf53a6c3809194097e70fcb978bfe69d9632a2e495da517dfad","version":9},{"created_at":"2026-06-10T22:34:33Z","element_count":91,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"dc7aeeda49add578e9d76fe5e5b36ccb6559803bd5915fa58e6479e70e6dae3a","version":6}]}