On real sessions the button showed up two or three turns from the bottom, over
a screen and a half of transcript that had barely painted anything.
The budget now spends paint weight, which is what the DOM actually mounts, and
600 units of it — 10-20 agentic turns measured, where a tool-heavy turn prices
at 30-90 and a plain exchange at 5-10. A floor of 8 turns covers the session of
enormous turns that a weight-only cut still truncates hard; it applies to a
real page only, so the small first-paint commit stays small and the backfill a
frame later fills the rest.
Measured on four stored sessions at the same budget: one went from 3 turns
visible to 12, another from 3 to 4, two unchanged. The store window still caps
what the DOM can reach at all.
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