{"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-ardenhouse-k9l793ar","versions":[{"created_at":"2026-06-10T22:53:47Z","element_count":63,"note":"legacy fix: jpy90050184→quote24122093 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"dee363f0096beedf9d15d3ace1c4f1beb6fb50eef31fba1f883bcf9f381309f7","version":10},{"created_at":"2026-06-10T17:08:47Z","element_count":89,"note":"5軸GA polish 43->98 by M5 (autonomous)","saved_by":"mcp","sha256":"c8603bcd3b41418beab5ae04fcf52da38f6e52ed5d4daad45f87670d07a32233","version":2}]}