{"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-wvsaldy4","versions":[{"created_at":"2026-06-10T22:57:48Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy52954560→quote21093533 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"eec68d3d35e7230857a3cec3f608a994e8b2003f1a0238c99aa1119cce833cdc","version":9},{"created_at":"2026-06-10T19:34:23Z","element_count":72,"note":"5軸GA polish 56->92 by M5 (autonomous)","saved_by":"mcp","sha256":"fe18b6b168c6eb643ebd3d2b1c5d0f5ac9afb007ebccf0530a9b95f5a216f6e3","version":2}]}