tree-wide: remove Emacs lines from all files This should be handled fine now by .dir-locals.el, so need to carry that stuff in every file.
tree-wide: sort includes Sort the includes accoding to the new coding style.
Use stdint.h macros instead of casts to print uint64_t values Casts are visually heavy, and can obscure unwanted truncations.
journal: include machine ID in QR code
journalctl: output FSS key as QR code on generating