{"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-piwa5b5j","versions":[{"created_at":"2026-06-10T22:54:11Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy90050184→quote19847721 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"bbb4973db69abcfcd8bebfd9003ebb01af1bf5c32d8102c9f7d8f892542301ec","version":10},{"created_at":"2026-06-10T17:23:12Z","element_count":90,"note":"5軸GA polish 56->98 by M5 (autonomous)","saved_by":"mcp","sha256":"2c8455ce5a526a1b3e43418905cc792acb0c0880e39a7ceb0cf288ce14f94b4a","version":2}]}