Feature request: Check for file before uploading to printer

I print a LOT of the same objects over and over again. I keep the USB in the panda touch up to date with the latest files.
I want it to check and verify that the file on the printer is the file that I am trying to print,
if it exist, use it and dont re upload,
If it does not exist upload.

Would be logical to check a checksum check before uploading the file.

No files, tests, or entry points are named. Start by locating the printer file-upload flow and determine how the printer exposes existing files for comparison. Done means an identical file is reused, while a missing or changed file is uploaded, with tests covering both paths.

Written by the indexing model from the issue text.