That's the problem. I boot the patched boot.img and I don't have a DIRECT INSTALL option in Magisk Mgr 25.1 Stable. Magisk Mgr doesn't see the phone as rooted (after booting or flashing the patched boot.img). My only install option in Magisk Mgr is to patch a saved boot.img file, which I've done, and flashed via fastboot, and rebooted, and still no Magisk Install option.Did you go to try to direct install? I haven't actually tried C.61 yet, I've got stuff to do this weekend and can't have my phone in an experimental state when I'm trying to call and Uber to get around, so I can't test it myself.
I can't figure out why Magisk won't see root when booting the posted patched C.61 boot.img.