Twenty was the review ceiling while the form allowed thirty, so a 21-30 slide
deck was written, stored and then silently never reviewed — and modifying one
above twenty was shown only its first twenty pages while the prompt claimed
one image per slide. The three numbers are the schema's own limit now, so a
deck that can be asked for can also be stored, reviewed and edited: the form's
max, both generation clamps and MAX_SLIDES are all 60.
Measured at that size before this change: 45 pages cost 28,796 prompt tokens
and 2.2s to review, a 46-page deck with a fault on page 24 was found and
re-laid correctly, and a 44-slide deck used ~5,900 output tokens of the
16,000 ceiling.
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