hide search for non-System Users

apps/jingrow/frontend/src/app/layouts/AppHeader.vue

@@ -29,8 +29,9 @@
 
     <div class="header-right">
       <n-space>
-        <!-- 搜索框 - 使用Naive UI的响应式属性 -->
+        <!-- 搜索框 - 使用Naive UI的响应式属性，仅System User显示 -->
         <n-input
+          v-if="isSystemUser"
           v-model:value="searchQuery"
           :placeholder="t('Search...')"
           clearable
@@ -93,6 +94,7 @@ const searchQuery = ref('')
 const appName = computed(() => localStorage.getItem('appName') || 'Jingrow')
 
 const user = computed(() => authStore.user)
+const isSystemUser = computed(() => authStore.user?.user_type === 'System User')
 
 const breadcrumbItems = computed(() => {
   const items: Array<{ label: string; href?: string }> = []