A whitespace-only prompt now tells you plainly that nothing was sent to the model.
What's wrong with this entry?
In non-interactive runs, a prompt that contains only spaces or newlines now returns a warning instead of failing silently. The result reads "Blank prompt — the message was only whitespace, so nothing was sent to the model."
- The turn ends without querying the model at all, so no tokens are spent.
- Previously the empty submission was only recorded internally, with no message back to the caller.
the message was only whitespace, so nothing was sent to the model.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.