v0.3.1 — token counts show what was new

Changed

• The token figure now shows what was actually new: 468.2k tokens (12.2k new · 456k cached). A bare total is honest but uninterpretable -- a one-iteration recovery reports
  something like 468k, which reads as enormous until you know ~97% of it is the same system
  prompt and the same files re-read every turn and billed as cache reads at a fraction of
  the input rate.