Use our pkg helpers consistently

install/preflight/pacman.sh

@@ -1,6 +1,6 @@
 if [[ -n ${OMARCHY_ONLINE_INSTALL:-} ]]; then
   # Install build tools
-  sudo pacman -S --needed --noconfirm base-devel
+  omarchy-pkg-add base-devel
 
   # Configure pacman
   sudo cp -f ~/.local/share/omarchy/default/pacman/pacman-${OMARCHY_MIRROR:-stable}.conf /etc/pacman.conf
@@ -10,7 +10,7 @@ if [[ -n ${OMARCHY_ONLINE_INSTALL:-} ]]; then
   sudo pacman-key --lsign-key 40DFB630FF42BCFFB047046CF0134EE680CAC571
 
   sudo pacman -Sy
-  sudo pacman -S --noconfirm --needed omarchy-keyring
+  omarchy-pkg-add omarchy-keyring
 
   # Refresh all repos
   sudo pacman -Syyu --noconfirm