{"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-7u66x0tw","versions":[{"created_at":"2026-06-10T23:58:01Z","element_count":85,"note":"5軸GA polish 50->98 by M5 (autonomous)","saved_by":"mcp","sha256":"bc0b3cdfd7fa8b5d955c2326dd135659908fa8381ff45f558fc1480aa658fd59","version":13},{"created_at":"2026-06-10T23:09:52Z","element_count":43,"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":"ce556e444000865767229a1db879cab9b8fa4ff0fe46abc18387c8f75d90de14","version":7}]}