Follow-up to 50ebdf89, which kept an internal tracking id on the grounds
that a reader needs to know where the answer comes from. The ruling is
that in shipped code the id should go too, and it is right: a row number
means nothing to someone reading packet-render.js, and it points at a
place they cannot open.
What the comment has to carry is that the value MAY CHANGE, so a later
reader does not treat it as settled and hardcode it somewhere. "Provisional,
pending a product decision" says that without pointing anywhere.
Three sites, all mine. CenteredSetTarget.vue carries the same reference
and is not mine; it belongs to the carded fleet sweep.