Add check for syncthing

Silly but for now it will suffice.  Maybe one day I'll learn the magic
of systemd so that I'll be able to set this up in a less embarrassing
way.

dotfiles/bash/post.bashrc

@@ -126,4 +126,5 @@ __bashum__setup_traps
 
 PROMPT_COMMAND=$(__bashum__mkpc)
 
+stman check
 tasknag