feat(table): 表格排序与搜索改为后端处理

frontend/src/components/admin/usage/UsageTable.vue

@@ -1,7 +1,15 @@
 <template>
   <div class="card overflow-hidden">
     <div class="overflow-auto">
-      <DataTable :columns="columns" :data="data" :loading="loading">
+      <DataTable
+        :columns="columns"
+        :data="data"
+        :loading="loading"
+        :server-side-sort="serverSideSort"
+        :default-sort-key="defaultSortKey"
+        :default-sort-order="defaultSortOrder"
+        @sort="(key, order) => $emit('sort', key, order)"
+      >
         <template #cell-user="{ row }">
           <div class="text-sm">
             <button
@@ -334,9 +342,27 @@ import DataTable from '@/components/common/DataTable.vue'
 import EmptyState from '@/components/common/EmptyState.vue'
 import Icon from '@/components/icons/Icon.vue'
 import type { AdminUsageLog } from '@/types'
+import type { Column } from '@/components/common/types'
 
-defineProps(['data', 'loading', 'columns'])
-defineEmits(['userClick'])
+interface Props {
+  data: AdminUsageLog[]
+  loading?: boolean
+  columns: Column[]
+  serverSideSort?: boolean
+  defaultSortKey?: string
+  defaultSortOrder?: 'asc' | 'desc'
+}
+
+withDefaults(defineProps<Props>(), {
+  loading: false,
+  serverSideSort: false,
+  defaultSortKey: '',
+  defaultSortOrder: 'asc'
+})
+defineEmits<{
+  userClick: [userID: number, email?: string]
+  sort: [key: string, order: 'asc' | 'desc']
+}>()
 const { t } = useI18n()
 
 // Tooltip state - cost