{"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-46pgxgf7","versions":[{"created_at":"2026-06-10T23:35:20Z","element_count":65,"note":"legacy fix(polish再汚染): 平屋floors2→1 / jpy90050184→quote20904388 (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":"8afee7674a5be0fa5223990f42b3b07502f1cf378388e09d890f65282de8d00d","version":11},{"created_at":"2026-06-10T23:07:56Z","element_count":90,"note":"5軸GA polish 60->98 by M5 (autonomous)","saved_by":"mcp","sha256":"fe0c0675379006c81240b23e504a04f86a669450535e0ed2b3fca7d9b5d81ac1","version":8},{"created_at":"2026-06-10T23:07:29Z","element_count":46,"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":"9405b1f304596b433d474820c5d87f9af854a87cf9b89b0b78c3dc44bd99f5ea","version":7}]}