fix: missing i18n for search placeholder

Author: NamesMT

apps/frontend/app/components/chat/sidebar/ChatSidebarHeaderSearch.vue

@@ -5,7 +5,7 @@ const searchInput = defineModel<string>({ required: true })
 <template>
   <div class="flex items-center gap-2 border-b px-2 py-1">
     <div class="i-hugeicons:bubble-chat-search shrink-0" />
-    <input v-model="searchInput" type="text" placeholder="Search chats..." class="w-full bg-transparent outline-none">
+    <input v-model="searchInput" type="text" :placeholder="$t('chat.sidebar.search.placeholder')" class="w-full bg-transparent outline-none">
     <Button v-show="searchInput" class="size-6 shrink-0" variant="ghost" size="icon" @click="searchInput = ''">
       <div class="i-hugeicons:cancel-01" />
     </Button>

i18n.lock

@@ -35,6 +35,7 @@ checksums:
     chat.settings.providerDialog.form.apiKey: ce825fec5b3e1f8e27c45b1a63619985
     chat.settings.providerDialog.form.models: d7687c91fa3ba81da866dee3becc5b5b
     chat.sidebar.newChat: 3d7b701878aca8e2dbb7c6732f7f3bee
+    chat.sidebar.search.placeholder: 7dead413e5e7e09286f0aaa95a755d6a
     chat.sidebar.threads.empty: eaa3199ed3ba5dd2bb3988ea999649e3
     chat.sidebar.threads.loading: c0591fcc6aa3eb6092ab4f4ce577804c
     chat.thread.branchedFrom: 9235ad091f1d3b7f65a33b2e906674ad

locals/locales/src/sheets/frontend/i18n.csv

@@ -55,6 +55,7 @@ chat.settings.providerDialog.description,,"Changes are automatically saved, just
 chat.settings.providerDialog.form.apiKey,,API Key,Clave API,Clé API,Ключ API,Khóa API,API 密钥
 chat.settings.providerDialog.form.models,,Models,Modelos,Modèles,Модели,Các mô hình,模型
 chat.sidebar.newChat,,New Chat,Nuevo chat,Nouvelle conversation,Новый чат,Cuộc trò chuyện mới,新建聊天
+chat.sidebar.search.placeholder,,Search chats...,Buscar chats...,Rechercher des conversations...,Поиск чатов...,Tìm kiếm cuộc trò chuyện...,搜索聊天...
 chat.sidebar.threads.empty,,No chats yet.,No hay chats todavía.,Pas encore de conversations.,Чатов пока нет.,Chưa có cuộc trò chuyện nào.,尚无聊天记录。
 chat.sidebar.threads.loading,,Loading threads...,Cargando conversaciones...,Chargement des conversations...,Загрузка бесед...,Đang tải các cuộc trò chuyện...,正在加载对话...
 chat.thread.branchedFrom,,Branched from {title},Ramificado desde {title},Dérivé de {title},Ответвлено от {title},Được tạo nhánh từ {title},分支自 {title}