.jpg rotation
https://graphicdesign.stackexchange.com/questions/134683/check-exif-orientation
claims bridge property shown as orientation is the value
after i rotate an image in bridge with Edit->Rotate, it shows up immediately in File Explorer
after i rotate an image in faststone, it shows the new orientation in bridge but not in File Explorer.
lossless rotation:
https://www.impulseadventure.com/photo/exif-orientation.html
https://www.impulseadventure.com/photo/lossless-rotation.html