Stage CUPS authorization as settings override (#237)

pkgbuilds/omarchy-settings-dev/omarchy-settings-dev.install

@@ -8,7 +8,7 @@ _etc_overrides_apply() {
 
   # NOTE: these cp -f's are intentionally destructive on every install/upgrade.
   # Users who customize /etc/os-release, /etc/plymouth/plymouthd.conf (theme
-  # switch), /etc/cups/cups-browsed.conf, /etc/nsswitch.conf,
+  # switch), /etc/cups/cups-browsed.conf, /etc/cups/cups-files.conf, /etc/nsswitch.conf,
   # /etc/security/faillock.conf, or /etc/skel/.bashrc WILL have their changes
   # reset to Omarchy defaults each time omarchy-settings-dev is upgraded. This is
   # the trade-off of routing upstream-owned paths through etc-overrides instead
@@ -21,6 +21,10 @@ _etc_overrides_apply() {
     install -d /etc/cups
     cp -f /usr/share/omarchy/etc-overrides/cups-cups-browsed.conf /etc/cups/cups-browsed.conf
   fi
+  if [[ -f /etc/cups/cups-files.conf && -f /usr/share/omarchy/etc-overrides/cups-cups-files.conf ]]; then
+    systemd-sysusers /etc/sysusers.d/omarchy-cups-browsed.conf
+    install -m 0640 -o root -g cups /usr/share/omarchy/etc-overrides/cups-cups-files.conf /etc/cups/cups-files.conf
+  fi
   cp -f /usr/share/omarchy/etc-overrides/plymouth-plymouthd.conf /etc/plymouth/plymouthd.conf
   cp -f /usr/share/omarchy/etc-overrides/dot.bashrc              /etc/skel/.bashrc
   chmod 0644 /etc/os-release /etc/security/faillock.conf /etc/nsswitch.conf \