{"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-iqmwvblp","versions":[{"created_at":"2026-06-10T23:06:05Z","element_count":85,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy70239456→quote22161645 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"42bce225fae4b1492e0f41c22fa415361f8100d6a98ab5f48b4c348307d01a52","version":9},{"created_at":"2026-06-10T22:34:51Z","element_count":89,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"a566e860cbbe72e43666aefb802fd486c72fc29562ca96c00735b361aed1ad84","version":6}]}