route-update: add vlog for IP-only list detection

router/route-update.sh

@@ -528,6 +528,7 @@ resolve_list_file()
         cat_expanded "$_f" | grep -v '^#' | grep -v '^$' | $_resolve_func | \
             grep -v '^#' | grep -v '^$' >> "$_resolved_new.tmp"
     else
+        vlog "$_tag$_label IP-only list, skipping DNS resolve"
         if [ "$_ipcmd" = "ip -6" ] ; then
             grep -v '^#' "$_f" | grep -v '^$' | grep ':' >> "$_resolved_new.tmp" || true
         else
@@ -567,7 +568,7 @@ resolve_list_file()
         mv "${_resolved_new}.merged" "$_resolved_new"
         vlog "$_tag$_label resolve history: $(ls "$history_dir" | wc -l) snapshots, $(wc -l < "$_resolved_new") unique IPs"
     else
-        vlog "$_tag$_label IP-only list, skipping history merge"
+        vlog "$_tag$_label IP-only list, no history merge needed"
     fi
 
     # Detect volatile domains (IPv4 and IPv6)