Fix #33: restore dc:creator XMP field to real authors after setCreator()

Fix #32: set PDF Creator field to iTagPDF (www.itagpdf.com)

Fix #27: generate one LI per list item, not per line

fix: downscale large images before Tesseract OCR to prevent hangs

fix: replace executor on cancel to unblock new pipeline runs

fix: commit pdftagger.jar via LFS (was excluded by .gitignore)

Sync latest backend and pipeline code

add pdf-script as plain directory

remove pdf-script submodule reference

Initial deployment