fix: keep mobile filters compact and visible

frontend/app.html

@@ -3137,18 +3137,18 @@
             <button type="button" class="btn btn-secondary share-refresh-btn" @click="refreshShareResources" aria-label="刷新分享资源">
               <i class="fas fa-sync-alt"></i><span class="share-action-label">刷新</span>
             </button>
-            <button type="button" class="btn btn-primary share-create-btn" @click="switchView('files')">
+            <button type="button" class="btn btn-primary share-create-btn" @click="switchView('files')" aria-label="创建分享" title="创建分享">
               <i class="fas fa-plus"></i><span class="share-action-label">创建分享</span>
             </button>
           </div>
         </header>
 
         <nav class="share-resource-tabs" aria-label="分享资源分类">
-          <button type="button" :class="{ active: shareResourceTab === 'shares' }" @click="shareResourceTab = 'shares'; showMobileShareFilters = false">
+          <button type="button" :class="{ active: shareResourceTab === 'shares' }" @click="shareResourceTab = 'shares'">
             <i class="fas fa-share-alt"></i> 分享链接
             <span>{{ shares.length }}</span>
           </button>
-          <button type="button" :class="{ active: shareResourceTab === 'directLinks' }" @click="shareResourceTab = 'directLinks'; showMobileShareFilters = false">
+          <button type="button" :class="{ active: shareResourceTab === 'directLinks' }" @click="shareResourceTab = 'directLinks'">
             <i class="fas fa-link"></i> 文件直链
             <span>{{ directLinks.length }}</span>
           </button>
@@ -3161,22 +3161,12 @@
             <span><i class="fas fa-shield-alt"></i> 状态 <strong>运行正常</strong></span>
           </div>
 
-          <div class="share-toolbar shares-toolbar" :class="{ 'share-filters-open': showMobileShareFilters, 'share-toolbar-direct': shareResourceTab === 'directLinks' }">
+          <div class="share-toolbar shares-toolbar" :class="{ 'share-toolbar-direct': shareResourceTab === 'directLinks' }">
             <div class="share-search-field">
               <i class="fas fa-search"></i>
               <input type="text" v-model="shareFilters.keyword" :placeholder="shareResourceTab === 'shares' ? '搜索文件名、链接或分享码' : '搜索文件名或直链地址'">
             </div>
-            <button
-              v-if="shareResourceTab === 'shares'"
-              type="button"
-              class="mobile-share-filter-toggle"
-              :class="{ active: activeShareFilterCount > 0 }"
-              :aria-expanded="showMobileShareFilters"
-              @click="showMobileShareFilters = !showMobileShareFilters">
-              <i class="fas fa-sliders-h"></i><span>筛选</span>
-              <span v-if="activeShareFilterCount > 0" class="mobile-share-filter-count">{{ activeShareFilterCount }}</span>
-            </button>
-            <div v-if="shareResourceTab === 'shares'" class="share-filter-controls" :class="{ 'is-open': showMobileShareFilters }">
+            <div v-if="shareResourceTab === 'shares'" class="share-filter-controls">
               <select v-model="shareFilters.type" aria-label="分享类型">
                 <option value="all">全部类型</option>
                 <option value="file">文件</option>
@@ -4051,14 +4041,13 @@
           <h3 style="margin: 0;">用户管理</h3>
           <button
             type="button"
-            class="mobile-admin-users-filter-toggle"
-            :class="{ active: showMobileAdminUserFilters || activeAdminUserFilterCount > 0 }"
-            :aria-expanded="showMobileAdminUserFilters ? 'true' : 'false'"
-            @click="showMobileAdminUserFilters = !showMobileAdminUserFilters"
+            class="mobile-admin-users-reset-btn"
+            :disabled="activeAdminUserFilterCount === 0"
+            @click="resetAdminUserFilters"
+            aria-label="重置用户筛选"
+            title="重置筛选"
           >
-            <i class="fas fa-sliders"></i>
-            <span>筛选</span>
-            <span v-if="activeAdminUserFilterCount" class="mobile-admin-users-filter-count">{{ activeAdminUserFilterCount }}</span>
+            <i class="fas fa-filter-circle-xmark"></i>
           </button>
           <button type="button" class="btn btn-secondary admin-users-refresh-btn" @click="loadUsers" :disabled="adminUsersLoading" style="min-width: 92px;" aria-label="刷新用户列表">
             <i :class="adminUsersLoading ? 'fas fa-spinner fa-spin' : 'fas fa-rotate'"></i>
@@ -4066,23 +4055,23 @@
           </button>
         </div>
 
-        <div class="admin-users-toolbar" :class="{ 'is-open': showMobileAdminUserFilters }">
+        <div class="admin-users-toolbar">
           <div class="admin-users-filter admin-users-filter-search">
             <label>搜索</label>
             <input type="text" v-model.trim="adminUserFilters.keyword" @input="triggerAdminUsersKeywordSearch" placeholder="ID / 用户名 / 邮箱">
           </div>
           <div class="admin-users-filter">
             <label>角色</label>
-            <select v-model="adminUserFilters.role" @change="handleAdminUsersFilterChange">
-              <option value="all">全部</option>
+            <select v-model="adminUserFilters.role" @change="handleAdminUsersFilterChange" aria-label="用户角色">
+              <option value="all">全部角色</option>
               <option value="admin">管理员</option>
               <option value="user">普通用户</option>
             </select>
           </div>
           <div class="admin-users-filter">
             <label>状态</label>
-            <select v-model="adminUserFilters.status" @change="handleAdminUsersFilterChange">
-              <option value="all">全部</option>
+            <select v-model="adminUserFilters.status" @change="handleAdminUsersFilterChange" aria-label="用户状态">
+              <option value="all">全部状态</option>
               <option value="active">正常</option>
               <option value="banned">已封禁</option>
               <option value="unverified">未激活</option>
@@ -4091,8 +4080,8 @@
           </div>
           <div class="admin-users-filter">
             <label>存储</label>
-            <select v-model="adminUserFilters.storage" @change="handleAdminUsersFilterChange">
-              <option value="all">全部</option>
+            <select v-model="adminUserFilters.storage" @change="handleAdminUsersFilterChange" aria-label="用户存储类型">
+              <option value="all">全部存储</option>
               <option value="local">当前本地</option>
               <option value="oss">当前OSS</option>
               <option value="local_only">仅本地</option>
@@ -4102,7 +4091,7 @@
           </div>
           <div class="admin-users-filter">
             <label>排序</label>
-            <select v-model="adminUserFilters.sort" @change="handleAdminUsersFilterChange">
+            <select v-model="adminUserFilters.sort" @change="handleAdminUsersFilterChange" aria-label="用户排序方式">
               <option value="created_desc">注册时间（新到旧）</option>
               <option value="created_asc">注册时间（旧到新）</option>
               <option value="username_asc">用户名（A-Z）</option>
@@ -4113,10 +4102,10 @@
           </div>
           <div class="admin-users-filter admin-users-filter-page-size">
             <label>每页</label>
-            <select v-model.number="adminUsersPageSize" @change="handleAdminUsersPageSizeChange">
-              <option :value="20">20</option>
-              <option :value="50">50</option>
-              <option :value="100">100</option>
+            <select v-model.number="adminUsersPageSize" @change="handleAdminUsersPageSizeChange" aria-label="每页用户数量">
+              <option :value="20">20 条</option>
+              <option :value="50">50 条</option>
+              <option :value="100">100 条</option>
             </select>
           </div>
           <div class="admin-users-filter admin-users-filter-reset">