■ 🕑 26. Subtree added
   Added a subtree view mode. I didn't know where to add the UI to access 
   it, so I added a link to it on the /post/ page, eg
   
   https://bbs.gikopoi.com/post/1704245584/16
   links to
   https://bbs.gikopoi.com/tree/1704245584/16