fix(a11y): add missing h1 in the search page

Author: MatteoGabriele

app/pages/search.vue

@@ -589,9 +589,12 @@ defineOgImageComponent('Default', {
 
 <template>
   <main class="flex-1" :class="{ 'overflow-x-hidden': viewMode !== 'table' }">
+    <h1 id="search-heading-title" class="sr-only">
+      {{ $t('search.results') }}
+    </h1>
     <!-- Results area with container padding -->
     <div class="container-sm py-6">
-      <section v-if="query" :aria-label="$t('search.results')">
+      <section v-if="query" aria-labelledby="search-heading-title">
         <!-- Initial loading (only after user interaction, not during view transition) -->
         <LoadingSpinner v-if="showSearching" :text="$t('search.searching')" />