优化

src/views/RolesView.vue

@@ -233,9 +233,10 @@ onMounted(loadRoles)
 <template>
   <div class="business-page">
     <el-alert v-if="loadError" type="error" :closable="false" show-icon role="alert"><template #title><div class="api-error-alert-title"><span>{{ loadError.message }}</span><ApiErrorMeta :details="loadError" /></div><el-button link type="danger" @click="loadRoles">重新加载</el-button></template></el-alert>
-    <QueryToolbar v-model="filters" class="surface-panel" ariaLabel="角色筛选" :fields="queryFields" @search="applyFilters"><template #actions><el-button v-if="canCreate" type="primary" @click="openCreate"><Plus :size="16" />新增角色</el-button></template></QueryToolbar>
+    <QueryToolbar v-model="filters" class="surface-panel" ariaLabel="角色筛选" :fields="queryFields" @search="applyFilters" />
 
     <section class="surface-panel table-panel">
+      <header class="panel-heading"><div><h2>角色与授权 <span class="secondary-text">共 {{ filteredRows.length }} 条</span></h2><p>角色负责聚合菜单、操作和数据范围，内部用户可分配多个角色。</p></div><el-button v-if="canCreate" type="primary" @click="openCreate"><Plus :size="16" />新增角色</el-button></header>
       <DataTable v-model:page="page" v-model:page-size="pageSize" :data="pagedRows" :columns="roleColumns" :loading="loading" :total="filteredRows.length" row-key="id" empty-text="没有符合条件的角色">
         <template #actions="{ row }"><div v-if="canEdit || canGrant || access.can('platform:role:status') || access.can('platform:role:delete')" class="table-actions"><el-button v-if="canEdit || canGrant" link type="primary" :disabled="rowActionId === (row as Role).id || (row as Role).builtIn" @click="openEdit(row as Role)"><Pencil :size="15" />配置</el-button><el-button v-if="access.can('platform:role:status')" link :type="(row as Role).status === '启用' ? 'danger' : 'success'" :loading="rowActionId === (row as Role).id" :disabled="(row as Role).builtIn" @click="toggleStatus(row as Role)">{{ (row as Role).status === '启用' ? '停用' : '启用' }}</el-button><el-button v-if="access.can('platform:role:delete')" link type="danger" :disabled="(row as Role).builtIn || (row as Role).userCount > 0 || rowActionId === (row as Role).id" @click="removeRole(row as Role)"><Trash2 :size="15" />删除</el-button></div><span v-else class="secondary-text">仅查看</span></template>
         <template #role="{ row }"><div class="role-cell"><span><ShieldCheck :size="18" /></span><div><strong>{{ (row as Role).name }}</strong><small>{{ (row as Role).code }}</small></div></div></template>