{"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-nzk7iepf","versions":[{"created_at":"2026-06-10T22:52:40Z","element_count":77,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy68153976→quote21425095 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"7c2ae941284fd1790c967129c111a3f8334e8e420d34932e9d8fb1839102c462","version":15},{"created_at":"2026-06-10T15:02:12Z","element_count":83,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"db8f4039fd9edb4591c352f7606c4cec36c107dbd43f39013c92c492af30da34","version":6}]}