guest role; guide section ticking

plugins/guides/frontend/views/GuideView.vue

@@ -122,10 +122,14 @@ function resetProgress () {
   saveProgress()
 }
 
+// Everything that can be ticked: checklist items, and the sections a reader
+// crosses off to keep their place - a step, or a heading on a guide that has
+// no steps at all (a converted article often has fifty headings and none).
 const totalChecks = computed(() => {
   let total = 0
   for (const block of guide.value?.blocks || []) {
     if (block.type === 'checklist') total += (block.items || []).length
+    else if (block.type === 'step' || block.type === 'heading') total += 1
   }
   return total
 })