:sparkles: implement category cleaner
:sparkles: implement category cleaner

liam-lai/ptt-alertor,meifamily/ptt-alertor,liam-lai/ptt-alertor,liam-lai/ptt-alertor,meifamily/ptt-alertor,meifamily/ptt-alertor,liam-lai/ptt-alertor,meifamily/ptt-alertor