last-prompt: call it a turn, not a sl0peration

The counter increments once per user text block, so what it counts is
exactly a turn in the ordinary prompt -> response sense. It also matches
the vocabulary pi already uses internally (turnBudget, maxTurns), so the
label no longer invents a word for a thing that has one.

"round" was the other candidate and is worse: it implies a symmetric game
with fixed phases, and it collides with the rounded-border language used
throughout these widgets. "prompt #N" is the most literal reading of the
counter, but it undersells the box -- the spinner and timer measure the
whole agent run, not just the prompt.

No layout change was needed. The label is 7 columns narrower, and the top
border derives its dash fill from visibleWidth(leftLabel) rather than any
hardcoded width, so the frame absorbs it.

The cross-reference in slop-tool-boxes.ts ships in 36e422b, whose hunk it
shares.

0 files changed, 0 insertions, 0 deletions