If you want to host it locally, Stirling PDF can be run in docker, and uses a library that uses Tesseract. Has a bunch of other handy PDF operations, too. I keep it around for the two times a year I need to merge, split, or decrypt PDFs.
https://github.com/Frooodle/Stirling-PDF/blob/main/HowToUseOCR.md
It can do it straight from PDF and do multiple files at a time.
Have you thought about adding a legend?
A lot of us use jackett or prowlarr already for radarr/sonarr integration. I use it occasionally to search multiple sites at once and avoid using public torrent sites’ front ends.
I think on a phone it would make sense for bottom and side, which is the top of a handheld PC. That way you could have the cord sticking out whatever direction was handy for you by turning your phone.
I have AMD hardware acceleration working for Plex in an LXC container with an AMD APU so I’d assume it’s possible.
Tdarr seems to use ffmpeg under the covers, so I’d focus on getting that working with amd. If I remember I had to install the mesa drivers and pass in the /dev/dri folder. Then you can check ffmpeg for the amf encoders (AMD media framework).