{"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-o1c5hjud","versions":[{"created_at":"2026-06-11T00:14:49Z","element_count":85,"note":"5軸GA polish 63->98 by M5 (autonomous)","saved_by":"mcp","sha256":"3ed250f30da8835c14f865e066cbb91be694fcd7b0ab0df40e7b2b68ac625fd8","version":13},{"created_at":"2026-06-10T23:10:04Z","element_count":47,"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":"2680524918a7fc778f598762049188dd48e886283d2159c33b56671bc5875a82","version":7}]}