--min-image-cc <num> is documented in percent and the per-image CC is a fraction in
[0,1], but the value was passed straight to MinCCForImage (which requires [0,1]), so
the documented usage (e.g. --min-image-cc 30) threw an uncaught JFJochException and
aborted. Divide the percent argument by 100.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>