{"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-dmhrhirl","versions":[{"created_at":"2026-06-10T22:52:41Z","element_count":63,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy102533759→quote20436475 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"628897745da388a48e264f3a91d7fc410a0722cccf6b0d7561838d49f23a8619","version":14},{"created_at":"2026-06-10T15:02:42Z","element_count":73,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"937c843dac87dfc36c0a13c69c1eb7cedcfd6af69fa2ff2bba1d19faeb3b0b49","version":5}]}