fix: remove unnecessary search landmark nested in <search>

The `<search>` element’s implicit ARIA role is `search`, so setting
`role=search` on the nested `<form>` is redundant and adds noise.

Author: knowler

app/components/AppHeader.vue

@@ -75,7 +75,6 @@ onKeyStroke(',', e => {
         <!-- Search bar (shown on all pages except home and search) -->
         <search v-if="showSearchBar" class="hidden sm:block flex-1 max-w-md">
           <form
-            role="search"
             method="GET"
             action="/search"
             class="relative"

app/pages/index.vue

@@ -50,7 +50,6 @@ defineOgImageComponent('Default')
         style="animation-delay: 0.2s"
       >
         <form
-          role="search"
           method="GET"
           action="/search"
           class="relative"

app/pages/search.vue

@@ -722,7 +722,7 @@ defineOgImageComponent('Default', {
         <h1 class="font-mono text-xl sm:text-2xl font-medium mb-4">{{ $t('nav.search') }}</h1>
 
         <search>
-          <form role="search" method="GET" action="/search" class="relative" @submit.prevent>
+          <form method="GET" action="/search" class="relative" @submit.prevent>
             <label for="search-input" class="sr-only">{{ $t('search.label') }}</label>
 
             <div class="relative group" :class="{ 'is-focused': isSearchFocused }">