fix: add missing progressStatus computed in PptParsing.vue

progressStatus was referenced in the template but never defined,
causing a Vue runtime warning on every render.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend/src/pages/components/ppt/PptParsing.vue

@@ -59,7 +59,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted } from 'vue'
+import { ref, computed, onMounted } from 'vue'
 import { Loading } from '@element-plus/icons-vue'
 import { pptApi } from '@/utils/ppt-api'
 
@@ -77,6 +77,7 @@ const progress = ref(0)
 const statusText = ref('准备解析...')
 const error = ref('')
 const results = ref<any[]>([])
+const progressStatus = computed(() => (progress.value >= 100 ? 'success' : ''))
 
 const typeTagMap: Record<string, string> = {
   savings: 'success',