Fix expired ingest task stuck state

frontend/src/components/IngestTab.vue

@@ -532,8 +532,9 @@ function handleProgressMessage(msg: ProgressMessage) {
   Object.assign(progress, msg);
   recordActivity(msg);
 
-  submitting.value = !msg.completed && (submitting.value || !!msg.taskId);
-  if (msg.completed) {
+  if (typeof msg.running === 'boolean') {
+    submitting.value = msg.running;
+  } else if (msg.completed) {
     submitting.value = false;
   }
 
@@ -558,6 +559,7 @@ function statusToProgress(resp: IngestStatusResponse): ProgressMessage {
     currentFile: '',
     message: resp.message,
     completed: resp.completed,
+    running: resp.running,
     ingestedFiles: resp.ingestedFiles,
     duplicateFiles: resp.duplicateFiles,
     missingMetadataFiles: resp.missingMetadataFiles,
@@ -575,8 +577,9 @@ function startPolling() {
       const resp = await getIngestStatus(taskId.value);
       if (resp) {
         handleProgressMessage(statusToProgress(resp));
-        if (resp.completed) {
+        if (resp.completed || !resp.running) {
           stopPolling();
+          wsDisconnect();
         }
       }
     } catch {

frontend/src/composables/useWebSocket.ts

@@ -12,6 +12,8 @@ export interface ProgressMessage {
   currentFile: string;
   message: string;
   completed: boolean;
+  /** REST 状态查询提供；WebSocket 进度消息通常不包含此字段。 */
+  running?: boolean;
   duplicateGroups?: number;
   movedFiles?: number;
   organizedFiles?: number;