more tracking; hide arb from welcome splash

src/components/OneTimeHint.vue

@@ -12,9 +12,11 @@ const props = defineProps({
   name: {type: String, required: true},
   when: {type: Boolean, default: true}, // optional conditional for when to show
   after: {type: String, default: null}, // set to the name of another hint that must happen before this hint, to chain hints into a tutorial.
+  onComplete: {type: Function, default: null},
 })
 
 const forceClose = ref(false)
+const shown = ref(false)
 
 const show = computed({
   get() {
@@ -23,11 +25,13 @@ const show = computed({
     const afterOk = props.after === null || prefs.hints[props.after];
     const result = !forceClose.value && !shownBefore && whenOk && afterOk
     // console.log(`show ${props.name}? ${result} <=`, !forceClose.value, whenOk, afterOk, prefs.hints)
-    if (result)
+    if (result) {
+      shown.value = true
       prefs.hints[props.name] = true
+    }
     return result
   },
-  set(v) { if(!v) forceClose.value=true; }
+  set(v) { if(!v) { forceClose.value=true; if (shown.value && props.onComplete) props.onComplete(); } }
 })
 </script>