fix: 活动选作品仅展示已发布作品

WorkSelector 请求 /public/works 增加 status=published，空状态提示优化

Made-with: Cursor

lesingle-creation-frontend/src/views/public/components/WorkSelector.vue

@@ -11,7 +11,7 @@
     <div v-if="loading" style="text-align: center; padding: 40px"><a-spin /></div>
 
     <div v-else-if="works.length === 0" style="text-align: center; padding: 40px">
-      <a-empty description="作品库中没有可提交的作品">
+      <a-empty description="暂无已发布作品，请先在作品库将作品上架后再报名">
         <a-button type="primary" shape="round" @click="goCreate">
           去创作
         </a-button>
@@ -48,7 +48,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, watch, onMounted } from 'vue'
+import { ref, watch } from 'vue'
 import { PictureOutlined, CheckCircleFilled } from '@ant-design/icons-vue'
 import { publicUserWorksApi, type UserWork } from '@/api/public'
 import { useRouter } from 'vue-router'
@@ -67,9 +67,13 @@ const selectedWork = ref<UserWork | null>(null)
 const fetchWorks = async () => {
   loading.value = true
   try {
-    // 获取所有非草稿、非被拒绝的作品（包括已发布和私密的）
-    const res = await publicUserWorksApi.list({ page: 1, pageSize: 100 })
-    works.value = res.list.filter((w) => w.status !== 'rejected' && w.status !== 'taken_down')
+    // 参加活动仅允许选择「已发布」作品（与发现页展示一致）
+    const res = await publicUserWorksApi.list({
+      page: 1,
+      pageSize: 100,
+      status: 'published',
+    })
+    works.value = res.list
   } catch { /* */ }
   finally { loading.value = false }
 }