It's not super easy at present for a wagneer to quickly figure out as a new wagneer:
Note that in the code there is a concept of a "pristine" card. (One that has only ever been edited on a given wagn by Wagn Bot.)
(suggested by Michael Maranda)
(this "idea" is really more recording a need than a solution at this point)
Does "source" here mean account?
yeah, that's probably a better word.
+discussed in support tickets
+relevant user stories