{"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-om8zhiml","versions":[{"created_at":"2026-06-11T00:15:04Z","element_count":89,"note":"5軸GA polish 61->98 by M5 (autonomous)","saved_by":"mcp","sha256":"057a1ca2832b5e2b275279a153cde9ad912cf07d28a81f04f8d6730b7ef4ba6c","version":13},{"created_at":"2026-06-10T23:10:09Z","element_count":54,"note":"legacy fix: rooms設備語除去 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"6dca982aa996a996e604556bfeaaac6e87dcdfd307184ca6a50394a8183fa58f","version":7}]}