feat(adminuser): 优化用户管理筛选并展示筛选人数

- 免押额度与号主类型改为下拉筛选，支持有/无和优质/普通
- 新增用户成长等级筛选
- 列表上方固定展示筛选结果人数，补充组合筛选测试

frontend/src/features/admin/api/adminUsers.ts

@@ -57,16 +57,21 @@ export interface AdminGrowthLevelAdjustPayload {
 export interface AdminUserQuery {
   keyword?: string
   status?: '' | UserStatus
-  has_deposit_free_quota?: boolean
-  quality_owner_only?: boolean
+  /** has=有免押额度，none=无免押额度，空=全部 */
+  deposit_free_quota?: '' | 'has' | 'none'
+  /** quality=优质号主，normal=普通用户，空=全部 */
+  owner_type?: '' | 'quality' | 'normal'
+  /** 成长等级 code，空=全部 */
+  growth_level?: string
 }
 
 export async function fetchAdminUsers(page = 1, pageSize = 20, query: AdminUserQuery = {}) {
   const params: Record<string, unknown> = { page, page_size: pageSize }
   if (query.keyword) params.keyword = query.keyword
   if (query.status) params.status = query.status
-  if (query.has_deposit_free_quota) params.has_deposit_free_quota = true
-  if (query.quality_owner_only) params.quality_owner_only = true
+  if (query.deposit_free_quota) params.deposit_free_quota = query.deposit_free_quota
+  if (query.owner_type) params.owner_type = query.owner_type
+  if (query.growth_level) params.growth_level = query.growth_level
   const { data } = await apiClient.get<ApiResponse<PaginatedResult<AdminUserItem>>>(
     '/admin/users',
     {

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

@@ -9,6 +9,26 @@
   margin-bottom: 16px;
 }
 
+.user-filter-summary {
+  display: flex;
+  align-items: baseline;
+  gap: 8px;
+  margin: 0 0 10px 4px;
+  font-size: 13px;
+  color: #64748b;
+}
+
+.user-filter-summary strong {
+  font-size: 18px;
+  color: #0f172a;
+  font-variant-numeric: tabular-nums;
+}
+
+.user-filter-summary-hint {
+  font-size: 12px;
+  color: #94a3b8;
+}
+
 .balance-available {
   color: #0f172a;
   font-variant-numeric: tabular-nums;

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

@@ -75,8 +75,9 @@ const walletForm = reactive({
 const filters = reactive<AdminUserQuery>({
   keyword: '',
   status: '',
-  has_deposit_free_quota: false,
-  quality_owner_only: false,
+  deposit_free_quota: '',
+  owner_type: '',
+  growth_level: '',
 })
 
 const {
@@ -98,8 +99,9 @@ function queryUsers() {
 function resetFilters() {
   filters.keyword = ''
   filters.status = ''
-  filters.has_deposit_free_quota = false
-  filters.quality_owner_only = false
+  filters.deposit_free_quota = ''
+  filters.owner_type = ''
+  filters.growth_level = ''
   queryUsers()
 }
 
@@ -455,14 +457,44 @@ function moneyCent(value: number | string | undefined) {
           </el-select>
         </el-form-item>
         <el-form-item label="免押额度">
-          <el-checkbox v-model="filters.has_deposit_free_quota" @change="queryUsers">
-            仅看有额度
-          </el-checkbox>
+          <el-select
+            v-model="filters.deposit_free_quota"
+            clearable
+            placeholder="全部免押额度"
+            style="width: 150px"
+            @change="queryUsers"
+          >
+            <el-option label="有免押额度" value="has" />
+            <el-option label="无免押额度" value="none" />
+          </el-select>
         </el-form-item>
         <el-form-item label="号主类型">
-          <el-checkbox v-model="filters.quality_owner_only" @change="queryUsers">
-            仅看优质号主
-          </el-checkbox>
+          <el-select
+            v-model="filters.owner_type"
+            clearable
+            placeholder="全部号主类型"
+            style="width: 150px"
+            @change="queryUsers"
+          >
+            <el-option label="优质号主" value="quality" />
+            <el-option label="普通用户" value="normal" />
+          </el-select>
+        </el-form-item>
+        <el-form-item label="用户等级">
+          <el-select
+            v-model="filters.growth_level"
+            clearable
+            placeholder="全部等级"
+            style="width: 130px"
+            @change="queryUsers"
+          >
+            <el-option
+              v-for="level in growthLevelOptions"
+              :key="level.code"
+              :label="level.name"
+              :value="level.code"
+            />
+          </el-select>
         </el-form-item>
         <el-form-item>
           <el-button type="primary" :icon="Search" :loading="loading" @click="queryUsers"
@@ -473,6 +505,13 @@ function moneyCent(value: number | string | undefined) {
       </el-form>
     </div>
 
+    <div class="user-filter-summary">
+      <span
+        >筛选结果 <strong>{{ loading ? '...' : total }}</strong> 人</span
+      >
+      <span v-if="loading" class="user-filter-summary-hint">正在统计</span>
+    </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="120" />