{"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-dxs4d3p8","versions":[{"created_at":"2026-06-10T22:52:43Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote20835511 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"03b9d6f33218f43b027bb6290ab4f823bd2a4acfa16a11d6b1c8669fa38b1e4e","version":13},{"created_at":"2026-06-10T15:36:45Z","element_count":72,"note":"5軸GA polish 60->96 by M5 (autonomous)","saved_by":"mcp","sha256":"a9d5884306ffb1b7b01688a1b81ab38757dc3b81337c752a8980b4aeffdcc3ab","version":5}]}