{"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-yloklkku","versions":[{"created_at":"2026-06-10T22:59:34Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy75041820→quote21031370 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"bca6ca13431f460b4bb06b76647d213809c2590241312d1dd5474127abd7332b","version":9},{"created_at":"2026-06-10T20:38:18Z","element_count":89,"note":"5軸GA polish 52->98 by M5 (autonomous)","saved_by":"mcp","sha256":"5298ac222ae42288f6a8d0ce764558b580f1a0d59b553558072a9658a8034256","version":2}]}