fix: update pacman.conf Server URL on re-install (was stuck on localhost)

install-client.sh

@@ -40,7 +40,9 @@ Server = http://$SHIELD_HOST:$SHIELD_PORT/repo
 SigLevel = Never"
 
 if grep -q "^\[aur-shield\]" "$PACMAN_CONF"; then
-    echo "⚠ [aur-shield] already exists in $PACMAN_CONF — skipping"
+    echo "⚠ [aur-shield] already exists — updating server URL..."
+    sudo sed -i "/^\[aur-shield\]/,/^\[/ s|Server = .*|Server = http://$SHIELD_HOST:$SHIELD_PORT/repo|" "$PACMAN_CONF"
+    echo "✓ Updated repo server URL"
 else
     echo "Adding [aur-shield] to $PACMAN_CONF..."
     sudo tee -a "$PACMAN_CONF" > /dev/null << EOF