{"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-henleyridgehouse-oxf3ezuc","versions":[{"created_at":"2026-06-10T22:53:41Z","element_count":85,"note":"legacy fix: jpy52954560→quote21237329 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"3c7973a11804cc20470ea25804ee8e4d85cbdb36f155c293e5088d49d2811022","version":10},{"created_at":"2026-06-10T17:08:49Z","element_count":72,"note":"5軸GA polish 43->91 by M5 (autonomous)","saved_by":"mcp","sha256":"8595687730bfd145920dbbeacf77f6894027553978f8529367b88e5fbdf07a72","version":2}]}