fix(frontend): 统一所有管理页面搜索框宽度为 w-full sm:w-64

frontend/src/components/admin/account/AccountTableFilters.vue

@@ -3,7 +3,7 @@
     <SearchInput
       :model-value="searchQuery"
       :placeholder="t('admin.accounts.searchAccounts')"
-      class="w-64"
+      class="w-full sm:w-64"
       @update:model-value="$emit('update:searchQuery', $event)"
       @search="$emit('change')"
     />

frontend/src/views/admin/GroupsView.vue

@@ -5,7 +5,7 @@
         <div class="flex flex-col justify-between gap-4 lg:flex-row lg:items-start">
           <!-- Left: fuzzy search + filters (can wrap to multiple lines) -->
           <div class="flex flex-1 flex-wrap items-center gap-3">
-            <div class="relative w-full sm:w-72 lg:w-80">
+            <div class="relative w-full sm:w-64">
               <svg
                 class="absolute left-3 top-1/2 h-5 w-5 -translate-y-1/2 text-gray-400 dark:text-gray-500"
                 fill="none"

frontend/src/views/admin/ProxiesView.vue

@@ -7,7 +7,7 @@
           <!-- Left: Fuzzy search + filters (wrap to multiple lines) -->
           <div class="flex flex-1 flex-wrap items-center gap-3">
             <!-- Search -->
-            <div class="relative w-full sm:flex-1 sm:min-w-[14rem] sm:max-w-md">
+            <div class="relative w-full sm:w-64">
               <svg
                 class="absolute left-3 top-1/2 h-5 w-5 -translate-y-1/2 text-gray-400 dark:text-gray-500"
                 fill="none"

frontend/src/views/admin/SubscriptionsView.vue

@@ -8,7 +8,7 @@
           <div class="flex flex-1 flex-wrap items-center gap-3">
             <!-- User Search -->
             <div
-              class="relative w-full sm:flex-1 sm:min-w-[14rem] sm:max-w-md"
+              class="relative w-full sm:w-64"
               data-filter-user-search
             >
               <svg