Four new extraction research documents covering color space and contrast
analysis for text visibility, medical/scientific document structure
(ICH E3, IMRaD, FDA labeling, eCTD), multilingual mixed-script extraction
with UBA bidi handling and CJK vertical text, and digital signature
metadata extraction with DocMDP integrity context.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
