{"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-6la41kb8","versions":[{"created_at":"2026-06-10T22:56:39Z","element_count":62,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy81784771→quote22758819 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"7d2a22aae82539b3be4e0d7c93050908a7777c083193b8deee80ecb1d920d349","version":10},{"created_at":"2026-06-10T18:46:39Z","element_count":85,"note":"5軸GA polish 58->98 by M5 (autonomous)","saved_by":"mcp","sha256":"b70adc50c0b1094c6752513195715ccf32d1b4fbfcf4a5567d2bdad54ab57d3f","version":3}]}