Replace pixel dimension check with a JPEG comment check. Processed
files are marked with 'magick:resize=8mp,quality=85,sampling=4:2:0'
via -set comment after -strip, so future runs skip them entirely.
- Add optional directory argument to images_resize_recursive.sh,
zip_images_resize_recursive.sh, and new rar2zip_recursive.sh
- Remove hardcoded-path wrappers rar2zip_images.sh and rar2zip_incomplete.sh
- Fix zip_images_resize.sh: move SCRIPT_DIR to top, change exit 1 to
continue on bad output file so remaining files still process
- Use MAX_PIXELS variable in images_resize.sh resize argument
- Fix zip_images_recursive.sh: replace case-sensitive 7z globs with
find -iregex piped via xargs