I accidentally deleted a post and I figured out how. I tried to edit a post that was only a few minutes old.
Step 1: without looking clicked to edit post
I was expecting the edit button, but I go the three dots.
Step 2: Hit delete by accident
I would suggest lengthening the amount of time a person can edit their post-- even allowing it to “forever” so a user can create an update in their top level post saying it is solved or share a link to whatever solved their original questions.
The settings are under admin/settings if this seems like a good change.