Add interactive menu regression

lib/storage.sh

@@ -127,7 +127,7 @@ storage_count() {
   local count=0 line
   while IFS= read -r line || [[ -n ${line} ]]; do
     [[ -n ${line} ]] || continue
-    ((count++))
+    ((count += 1))
   done < <(storage_list)
   printf '%s\n' "${count}"
 }