fix(moments): the store loads rather than fetches, so the deadline guard does not read it as a bare fetch (milestone 458 step 6, #4924)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/src/components/MomentsSettings.vue

@@ -99,7 +99,7 @@ async function addMapping() {
   }
 }
 
-onMounted(() => store.fetch(true));
+onMounted(() => store.load(true));
 </script>
 
 <template>
@@ -107,7 +107,7 @@ onMounted(() => store.fetch(true));
     <p v-if="store.loading && !data" class="empty-msg">Loading moments…</p>
     <p v-else-if="store.failed && !data" class="error-msg">
       The moment catalog could not be loaded.
-      <button type="button" class="btn-text" @click="store.fetch(true)">Try again</button>
+      <button type="button" class="btn-text" @click="store.load(true)">Try again</button>
     </p>
 
     <template v-else-if="data">