        check('生产和到期日不混写',output.get('manufactured')=='2026-10-01' and output.get('expires')=='2027-04-01');check('批次逐字保留',output.get('batch')=='L-20261001-A');check('无标签数字没有变成日期','20271111' in output.get('unassigned',[]));check('程序确认生产日先于到期日',date.fromisoformat(output.get('manufactured','1900-01-01'))<date.fromisoformat(output.get('expires','1900-01-01')));result=output;dump(artifact('packaging-fields.json'),result)
