{"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-ykdays2h","versions":[{"created_at":"2026-06-10T23:23:56Z","element_count":72,"note":"5軸GA polish 54->96 by M5 (autonomous)","saved_by":"mcp","sha256":"9beeb82b39e29688e42f52d8c982e11330d88af44e6cb2d7609315071873ff38","version":10},{"created_at":"2026-06-10T23:07:54Z","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":"c99c93ac86dc77085dc248afbe9fe26510bd07fa2c265dd341e9f1d5d945e09f","version":7}]}