feat(payment): UI improvements for admin payment pages

- Plan table: group column shows GroupBadge with platform color instead
  of raw ID, column header changed to "分组"
- Plan dialog: group info preview uses GroupBadge, removes redundant
  platform/rate fields
- Action buttons: all payment admin tables (plans, orders, providers)
  now use vertically stacked icon+text buttons matching the app style
- Added i18n keys: payment.admin.group, common.view

frontend/src/components/admin/payment/AdminOrderTable.vue

@@ -83,37 +83,37 @@
       </template>
 
       <template #cell-actions="{ row }">
-        <div class="flex items-center gap-1">
+        <div class="flex items-center gap-2">
           <button
             @click="emit('detail', row)"
-            class="btn-icon text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-200"
-            :title="t('common.view')"
+            class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-gray-50 hover:text-gray-700 dark:hover:bg-gray-800/50 dark:hover:text-gray-300"
           >
             <Icon name="eye" size="sm" />
+            <span class="text-xs">{{ t('common.view') }}</span>
           </button>
           <button
             v-if="row.status === 'PENDING'"
             @click="emit('cancel', row)"
-            class="btn-icon text-yellow-500 hover:text-yellow-700"
-            :title="t('payment.orders.cancel')"
+            class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-yellow-50 hover:text-yellow-600 dark:hover:bg-yellow-900/20 dark:hover:text-yellow-400"
           >
             <Icon name="x" size="sm" />
+            <span class="text-xs">{{ t('payment.orders.cancel') }}</span>
           </button>
           <button
             v-if="row.status === 'FAILED'"
             @click="emit('retry', row)"
-            class="btn-icon text-blue-500 hover:text-blue-700"
-            :title="t('payment.admin.retry')"
+            class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-blue-50 hover:text-blue-600 dark:hover:bg-blue-900/20 dark:hover:text-blue-400"
           >
             <Icon name="refresh" size="sm" />
+            <span class="text-xs">{{ t('payment.admin.retry') }}</span>
           </button>
           <button
             v-if="canRefund(row)"
             @click="emit('refund', row)"
-            class="btn-icon text-red-500 hover:text-red-700"
-            :title="t('payment.admin.refund')"
+            class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-red-50 hover:text-red-600 dark:hover:bg-red-900/20 dark:hover:text-red-400"
           >
             <Icon name="dollar" size="sm" />
+            <span class="text-xs">{{ t('payment.admin.refund') }}</span>
           </button>
         </div>
       </template>

frontend/src/components/payment/ProviderCard.vue

@@ -46,12 +46,14 @@
       <div class="flex items-center gap-4">
         <ToggleSwitch :label="t('common.enabled')" :checked="provider.enabled" @toggle="emit('toggleField', 'enabled')" />
         <ToggleSwitch :label="t('admin.settings.payment.refundEnabled')" :checked="provider.refund_enabled" @toggle="emit('toggleField', 'refund_enabled')" />
-        <div class="flex items-center gap-1 border-l border-gray-200 pl-3 dark:border-dark-600">
-          <button @click="emit('edit')" class="btn-icon text-blue-500 hover:text-blue-700" :title="t('common.edit')">
+        <div class="flex items-center gap-2 border-l border-gray-200 pl-3 dark:border-dark-600">
+          <button @click="emit('edit')" class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-blue-50 hover:text-blue-600 dark:hover:bg-blue-900/20 dark:hover:text-blue-400">
             <Icon name="edit" size="sm" />
+            <span class="text-xs">{{ t('common.edit') }}</span>
           </button>
-          <button @click="emit('delete')" class="btn-icon text-red-500 hover:text-red-700" :title="t('common.delete')">
+          <button @click="emit('delete')" class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-red-50 hover:text-red-600 dark:hover:bg-red-900/20 dark:hover:text-red-400">
             <Icon name="trash" size="sm" />
+            <span class="text-xs">{{ t('common.delete') }}</span>
           </button>
         </div>
       </div>

frontend/src/i18n/locales/en.ts

@@ -306,6 +306,7 @@ export default {
     saving: 'Saving...',
     selectedCount: '({count} selected)',
     refresh: 'Refresh',
+    view: 'View',
     settings: 'Settings',
     chooseFile: 'Choose File',
     notAvailable: 'N/A',
@@ -5199,6 +5200,7 @@ export default {
       forSale: 'For Sale',
       onSale: 'On Sale',
       offSale: 'Off Sale',
+      group: 'Group',
       groupId: 'Group ID',
       features: 'Features',
       featuresHint: 'One feature per line',

frontend/src/i18n/locales/zh.ts

@@ -306,6 +306,7 @@ export default {
     saving: '保存中...',
     selectedCount: '（已选 {count} 个）',
     refresh: '刷新',
+    view: '查看',
     settings: '设置',
     chooseFile: '选择文件',
     notAvailable: '不可用',
@@ -5396,6 +5397,7 @@ export default {
       forSale: '上架状态',
       onSale: '上架',
       offSale: '下架',
+      group: '分组',
       groupId: '分组 ID',
       features: '功能特性',
       featuresHint: '每行一个特性',

frontend/src/views/admin/orders/AdminOrdersView.vue

@@ -38,11 +38,23 @@
           <span class="text-xs text-gray-500 dark:text-gray-400">{{ formatDateTime(value) }}</span>
         </template>
         <template #cell-actions="{ row }">
-          <div class="flex items-center gap-1">
-            <button @click="showOrderDetail(row)" class="btn-icon text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-200" :title="t('common.view')"><Icon name="eye" size="sm" /></button>
-            <button v-if="row.status === 'PENDING'" @click="handleCancelOrder(row)" class="btn-icon text-yellow-500 hover:text-yellow-700" :title="t('payment.orders.cancel')"><Icon name="x" size="sm" /></button>
-            <button v-if="row.status === 'FAILED'" @click="handleRetryOrder(row)" class="btn-icon text-blue-500 hover:text-blue-700" :title="t('payment.admin.retry')"><Icon name="refresh" size="sm" /></button>
-            <button v-if="canRefund(row)" @click="openRefundDialog(row)" class="btn-icon text-red-500 hover:text-red-700" :title="t('payment.admin.refund')"><Icon name="dollar" size="sm" /></button>
+          <div class="flex items-center gap-2">
+            <button @click="showOrderDetail(row)" class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-gray-50 hover:text-gray-700 dark:hover:bg-gray-800/50 dark:hover:text-gray-300">
+              <Icon name="eye" size="sm" />
+              <span class="text-xs">{{ t('common.view') }}</span>
+            </button>
+            <button v-if="row.status === 'PENDING'" @click="handleCancelOrder(row)" class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-yellow-50 hover:text-yellow-600 dark:hover:bg-yellow-900/20 dark:hover:text-yellow-400">
+              <Icon name="x" size="sm" />
+              <span class="text-xs">{{ t('payment.orders.cancel') }}</span>
+            </button>
+            <button v-if="row.status === 'FAILED'" @click="handleRetryOrder(row)" class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-blue-50 hover:text-blue-600 dark:hover:bg-blue-900/20 dark:hover:text-blue-400">
+              <Icon name="refresh" size="sm" />
+              <span class="text-xs">{{ t('payment.admin.retry') }}</span>
+            </button>
+            <button v-if="canRefund(row)" @click="openRefundDialog(row)" class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-red-50 hover:text-red-600 dark:hover:bg-red-900/20 dark:hover:text-red-400">
+              <Icon name="dollar" size="sm" />
+              <span class="text-xs">{{ t('payment.admin.refund') }}</span>
+            </button>
           </div>
         </template>
       </DataTable>

frontend/src/views/admin/orders/AdminPaymentPlansView.vue

@@ -49,9 +49,15 @@
           </button>
         </template>
         <template #cell-actions="{ row }">
-          <div class="flex items-center gap-1">
-            <button @click="openPlanEdit(row)" class="btn-icon text-blue-500 hover:text-blue-700" :title="t('common.edit')"><Icon name="edit" size="sm" /></button>
-            <button @click="confirmDeletePlan(row)" class="btn-icon text-red-500 hover:text-red-700" :title="t('common.delete')"><Icon name="trash" size="sm" /></button>
+          <div class="flex items-center gap-2">
+            <button @click="openPlanEdit(row)" class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-blue-50 hover:text-blue-600 dark:hover:bg-blue-900/20 dark:hover:text-blue-400">
+              <Icon name="edit" size="sm" />
+              <span class="text-xs">{{ t('common.edit') }}</span>
+            </button>
+            <button @click="confirmDeletePlan(row)" class="flex flex-col items-center gap-0.5 rounded-lg p-1.5 text-gray-500 transition-colors hover:bg-red-50 hover:text-red-600 dark:hover:bg-red-900/20 dark:hover:text-red-400">
+              <Icon name="trash" size="sm" />
+              <span class="text-xs">{{ t('common.delete') }}</span>
+            </button>
           </div>
         </template>
       </DataTable>
@@ -66,17 +72,17 @@
             <input v-model="planForm.name" type="text" class="input" required />
           </div>
           <div>
-            <label class="input-label">{{ t('payment.admin.groupId') }}</label>
+            <label class="input-label">{{ t('payment.admin.group') }}</label>
             <Select v-model="planForm.group_id" :options="groupOptions" class="w-full" />
           </div>
         </div>
 
         <!-- Group Info Preview -->
         <div v-if="selectedGroupInfo" class="rounded-lg border border-gray-200 bg-gray-50 p-3 dark:border-dark-600 dark:bg-dark-800">
-          <p class="mb-2 text-xs font-semibold text-gray-500 dark:text-gray-400">{{ t('payment.admin.groupInfo') }}</p>
+          <div class="mb-2 flex items-center gap-2">
+            <GroupBadge :name="selectedGroupInfo.name" :platform="selectedGroupInfo.platform" :rate-multiplier="selectedGroupInfo.rate_multiplier" />
+          </div>
           <div class="grid grid-cols-2 gap-2 text-xs">
-            <div><span class="text-gray-500">{{ t('payment.admin.platform') }}:</span> <span class="ml-1 font-medium text-gray-700 dark:text-gray-300">{{ selectedGroupInfo.platform }}</span></div>
-            <div><span class="text-gray-500">{{ t('payment.admin.rateMultiplierLabel') }}:</span> <span class="ml-1 font-medium text-gray-700 dark:text-gray-300">{{ selectedGroupInfo.rate_multiplier }}x</span></div>
             <div><span class="text-gray-500">{{ t('payment.admin.dailyLimit') }}:</span> <span class="ml-1 font-medium text-gray-700 dark:text-gray-300">{{ selectedGroupInfo.daily_limit_usd != null ? '$' + selectedGroupInfo.daily_limit_usd : t('payment.admin.unlimited') }}</span></div>
             <div><span class="text-gray-500">{{ t('payment.admin.weeklyLimit') }}:</span> <span class="ml-1 font-medium text-gray-700 dark:text-gray-300">{{ selectedGroupInfo.weekly_limit_usd != null ? '$' + selectedGroupInfo.weekly_limit_usd : t('payment.admin.unlimited') }}</span></div>
             <div><span class="text-gray-500">{{ t('payment.admin.monthlyLimit') }}:</span> <span class="ml-1 font-medium text-gray-700 dark:text-gray-300">{{ selectedGroupInfo.monthly_limit_usd != null ? '$' + selectedGroupInfo.monthly_limit_usd : t('payment.admin.unlimited') }}</span></div>
@@ -200,7 +206,7 @@ const validityUnitOptions = computed(() => [
 const planColumns = computed((): Column[] => [
   { key: 'id', label: 'ID' },
   { key: 'name', label: t('payment.admin.planName') },
-  { key: 'group_id', label: t('payment.admin.groupId') },
+  { key: 'group_id', label: t('payment.admin.group') },
   { key: 'price', label: t('payment.admin.price') },
   { key: 'validity_days', label: t('payment.admin.validityDays') },
   { key: 'for_sale', label: t('payment.admin.forSale') },