style(admin): 统一列设置按钮位置到刷新按钮右侧

将订阅管理和账号管理页面的列设置按钮移动到刷新按钮右侧，
与用户管理页面保持一致的布局。
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

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

@@ -4,6 +4,7 @@
     <button @click="$emit('refresh')" :disabled="loading" class="btn btn-secondary">
       <Icon name="refresh" size="md" :class="[loading ? 'animate-spin' : '']" />
     </button>
+    <slot name="after"></slot>
     <button @click="$emit('sync')" class="btn btn-secondary">{{ t('admin.accounts.syncFromCrs') }}</button>
     <button @click="$emit('create')" class="btn btn-primary">{{ t('admin.accounts.createAccount') }}</button>
   </div>

frontend/src/views/admin/AccountsView.vue

@@ -16,7 +16,7 @@
             @sync="showSync = true"
             @create="showCreate = true"
           >
-            <template #before>
+            <template #after>
               <!-- Column Settings Dropdown -->
               <div class="relative" ref="columnDropdownRef">
                 <button

frontend/src/views/admin/SubscriptionsView.vue

@@ -85,6 +85,14 @@
 
           <!-- Right: Actions -->
           <div class="ml-auto flex flex-wrap items-center justify-end gap-3">
+            <button
+              @click="loadSubscriptions"
+              :disabled="loading"
+              class="btn btn-secondary"
+              :title="t('common.refresh')"
+            >
+              <Icon name="refresh" size="md" :class="loading ? 'animate-spin' : ''" />
+            </button>
             <!-- Column Settings Dropdown -->
             <div class="relative" ref="columnDropdownRef">
               <button
@@ -136,14 +144,6 @@
                 </div>
               </div>
             </div>
-            <button
-              @click="loadSubscriptions"
-              :disabled="loading"
-              class="btn btn-secondary"
-              :title="t('common.refresh')"
-            >
-              <Icon name="refresh" size="md" :class="loading ? 'animate-spin' : ''" />
-            </button>
             <button @click="showAssignModal = true" class="btn btn-primary">
               <Icon name="plus" size="md" class="mr-2" />
               {{ t('admin.subscriptions.assignSubscription') }}