{"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-8kcpcjow","versions":[{"created_at":"2026-06-10T23:35:24Z","element_count":77,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy75041820→quote19293329 (旧polishコード再書き込みの再是正・rollback=m5:legacy_fix_rollback.jsonl phase=polish_recontam)","saved_by":"mcp","sha256":"6590533a0d97090b757e6de5281a6425cb86bd28475d7151b423170406bf5e6a","version":12},{"created_at":"2026-06-10T23:08:14Z","element_count":92,"note":"5軸GA polish 54->98 by M5 (autonomous)","saved_by":"mcp","sha256":"8be9695482f9fcbb8791369c751733b511b9db6a04808c9e8ce26437a4f3d265","version":9},{"created_at":"2026-06-10T23:07:22Z","element_count":50,"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":"6773e11d336e415377a3299c5ceeadb180076fbb190c9aa29f50d8763695f0ae","version":8}]}