fix(archsetup): stop yay hanging on its diff prompt during unattended installs

A VM test run hung for 80 minutes and timed out. yay was blocking on "Diffs to show?" for an AUR package whose build files already existed, waiting for input that never comes in a headless install. --noconfirm doesn't cover yay's diff and clean menus.

I added --answerdiff None --answerclean None to the yay call in aur_install: show no diffs, don't clean, proceed. This is the right answer for an unattended run and matches the --noconfirm posture already in place. It likely explains the recurring 90-minute VM-test timeouts that read like slow AUR builds.

0 files changed, 0 insertions, 0 deletions