What if you set up 2 channels - #request-active (where task threads are submitted) and #request-closed (where task threads are archived and no other posts are a

What if you set up 2 channels - #request-active (where task threads are submitted) and #request-closed (where task threads are archived and no other posts are allowed). When the work is completed, the fulfiller inserts a reaction. X hours later, that work is moved from #request-active to #request-closed through an automated bot.