用户管理增加查找筛选

后台用户列表此前仅分页，数据量大时无法定位用户。

- 后端：List 新增 ListQuery（关键词 + 状态），抽出 applyUserFilter
  对总数与列表查询统一加筛选；关键词为纯数字时同时按用户 ID 精确匹配，
  否则按手机号/昵称模糊匹配
- 前端：AdminUsersView 新增筛选栏（关键词：手机号/昵称/用户ID，
  状态：正常/已冻结/已禁用），回车/清空/选择即查，查询重置到第 1 页

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/src/features/admin/views/AdminUsersView.vue

@@ -1,7 +1,8 @@
 <script setup lang="ts">
 import { readError } from '@/shared/utils/error'
 import { ElMessage } from 'element-plus'
-import { ref } from 'vue'
+import { Search } from '@element-plus/icons-vue'
+import { reactive, ref } from 'vue'
 
 import {
   fetchAdminUsers,
@@ -9,6 +10,7 @@ import {
   setAdminUserDepositFreeQuota,
   unfreezeAdminUser,
   type AdminUserItem,
+  type AdminUserQuery,
 } from '@/features/admin/api/adminUsers'
 import { centToYuan, formatCent, yuanToCent } from '@/shared/utils/money'
 import { useAdminPaginatedTable } from '@/features/admin/composables/useAdminPaginatedTable'
@@ -22,6 +24,11 @@ const quotaUser = ref<AdminUserItem | null>(null)
 const freezeReason = ref('')
 const quotaAmount = ref(0)
 
+const filters = reactive<AdminUserQuery>({
+  keyword: '',
+  status: '',
+})
+
 const {
   loading,
   data: users,
@@ -30,9 +37,20 @@ const {
   currentPageSize,
   load: loadUsers,
 } = useAdminPaginatedTable<AdminUserItem>({
-  fetchFn: fetchAdminUsers,
+  fetchFn: (page, pageSize) => fetchAdminUsers(page, pageSize, filters),
 })
 
+function queryUsers() {
+  currentPage.value = 1
+  void loadUsers()
+}
+
+function resetFilters() {
+  filters.keyword = ''
+  filters.status = ''
+  queryUsers()
+}
+
 function openFreeze(row: AdminUserItem) {
   activeUser.value = row
   freezeReason.value = ''
@@ -102,7 +120,41 @@ function moneyCent(value: number | string | undefined) {
       <el-button @click="loadUsers">刷新</el-button>
     </div>
 
-    <el-table v-loading="loading" class="table-panel" :data="users">
+    <div class="user-filter-bar">
+      <el-form inline @submit.prevent>
+        <el-form-item label="关键词">
+          <el-input
+            v-model="filters.keyword"
+            clearable
+            placeholder="手机号 / 昵称 / 用户ID"
+            style="width: 220px"
+            @keyup.enter="queryUsers"
+            @clear="queryUsers"
+          />
+        </el-form-item>
+        <el-form-item label="状态">
+          <el-select
+            v-model="filters.status"
+            clearable
+            placeholder="全部状态"
+            style="width: 140px"
+            @change="queryUsers"
+          >
+            <el-option label="正常" value="active" />
+            <el-option label="已冻结" value="frozen" />
+            <el-option label="已禁用" value="disabled" />
+          </el-select>
+        </el-form-item>
+        <el-form-item>
+          <el-button type="primary" :icon="Search" :loading="loading" @click="queryUsers"
+            >查询</el-button
+          >
+          <el-button @click="resetFilters">重置</el-button>
+        </el-form-item>
+      </el-form>
+    </div>
+
+    <el-table v-loading="loading" class="table-panel" :data="users" empty-text="未找到匹配的用户">
       <el-table-column prop="id" label="用户ID" width="80" />
       <el-table-column prop="nickname" label="昵称" min-width="130" />
       <el-table-column prop="phone" label="手机号" min-width="130" />
@@ -209,3 +261,16 @@ function moneyCent(value: number | string | undefined) {
     </el-dialog>
   </section>
 </template>
+
+<style scoped>
+.user-filter-bar {
+  margin-bottom: 16px;
+  padding: 16px 16px 0;
+  border-radius: 8px;
+  background: #fff;
+}
+
+.user-filter-bar :deep(.el-form-item) {
+  margin-bottom: 16px;
+}
+</style>