Just to clarify, is the repair method that you are referring to the method that installs a fresh copy of windows onto the drive and moves the original installation into the windows.old folder?
I do have access to the file system of the broken win11 and have the CBS log. It shows that an update was conducted the day before the crash, though I was able to boot win11 on crash day successfully, it was only after shutting it down, loading win10 and then loading win11 again that it failed. Unless the time on the log isn't system time (Australia) but US time? Then the events listed in the log could have taken place just before the crash?
Yes this person's issue does feel very familiar! I'll be following it closely to see if you can find a solution. It seems like you are at a point where you are trying to get the sfc to run successfully. If it helps, I was able to get the scannow operation to complete successfully but it did not solve my problem.
Is there a way that I could determine the cause of my problem via kernel debugging?