route-update: skip gw-* dirs in orphan cleanup (owned by route-health)

router/route-update.sh

@@ -719,6 +719,8 @@ cleanup_state()
             for list_state in "$sdir"/*/ ; do
                 [ -d "$list_state" ] || continue
                 local lname=$(basename "$list_state")
+                # Skip gw-* dirs (owned by route-health.sh)
+                case "$lname" in gw-*) continue ;; esac
                 if [ ! -f "$routes_dir/$name/${lname}.list" ] ; then
                     # Check if list moved to another group (don't flush shared table)
                     local moved_to=$(find -L "$routes_dir" -maxdepth 2 -name "${lname}.list" -type f 2>/dev/null | head -1)