Add an availability shield for AUR

install/preflight/aur.sh

@@ -3,6 +3,16 @@
 # Install build tools
 sudo pacman -Sy --needed --noconfirm base-devel
 
+# Ensure AUR is available
+while true; do
+  if curl -s --retry 4 --connect-timeout 30 --head -A "omarchy-update" "https://aur.archlinux.org"; then
+    break
+  else
+    echo -e "\n\e[31mAUR is unavailable. Retrying in 10 seconds.\e[0m"
+    sleep 10
+  fi
+done
+
 # Only add Chaotic-AUR if the architecture is x86_64 so ARM users can build the packages
 if [[ "$(uname -m)" == "x86_64" ]] && [ -z "$DISABLE_CHAOTIC" ] && ! command -v yay &>/dev/null; then
   # Try installing Chaotic-AUR keyring and mirrorlist