The floor introduces a state the sweep had no arm for. An image whose
largest embedded preview is genuinely smaller than 1025px now comes back
from index_preview as an error, lands in the generic Err arm, and is
counted as failed -- which means no face_index row, which means it is
still outstanding, which means the next sweep fetches exactly the same
bytes and refuses them again. For ever, on every run, at one range
request each. The previous behaviour was wrong but at least terminated;
this would not.
So ProxyTooSmall gets its own arm, and it records a marker at the true
edge rather than nothing. That is the difference between "we looked and
found nothing" -- which would be a lie, since nothing was looked at --
and "this was examined at 900px, which is the best this file has". The
first is unrecoverable; the second is a fact source_edge was added to
carry, and a later floor or a bigger proxy can select on it deliberately
the way V12 just did.
Counted separately from failures all the way up, because they are not
failures and reading them as such would misdescribe a library of small
scans as a broken network. The summary line says how many and why.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
dtourolleandClaude Opus 5
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