{"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-cjez7tnw","versions":[{"created_at":"2026-06-10T22:56:25Z","element_count":66,"note":"legacy fix: 平屋floors2→1 / rooms設備語除去 / jpy85444799→quote20833288 (旧世代データ是正・実験済u-house-890wnsao・rollback=m5:legacy_fix_rollback.jsonl)","saved_by":"mcp","sha256":"58a23eca2123c9d150011c63e95f3f00a7e15e44f80709609f72bba297af967e","version":10},{"created_at":"2026-06-10T18:46:54Z","element_count":74,"note":"5軸GA polish 60->97 by M5 (autonomous)","saved_by":"mcp","sha256":"f80896b66e9dbc5faccd1bf7cdc785b6272f41e6e93edbe3d3cec6ddd274c87e","version":3}]}