修复生成确认与素材导出

补齐外部生成确认请求的 JSON Content-Type

本地屏蔽已确认终态任务避免轮询重复弹窗

单素材导出改为读取 Blob 后触发浏览器下载

序列帧导出按 frame objectKey 换签读取

src/components/platform-entry/PlatformEntryFlowShellImpl.tsx

@@ -2146,6 +2146,9 @@ export function PlatformEntryFlowShellImpl({
   const acknowledgingExternalGenerationDialogKeysRef = useRef<Set<string>>(
     new Set(),
   );
+  const locallyAcknowledgedExternalGenerationJobIdsRef = useRef<Set<string>>(
+    new Set(),
+  );
   const [
     pendingPlatformTaskCompletionDialog,
     setPendingPlatformTaskCompletionDialog,
@@ -4973,6 +4976,7 @@ export function PlatformEntryFlowShellImpl({
 
   useEffect(() => {
     acknowledgingExternalGenerationDialogKeysRef.current.clear();
+    locallyAcknowledgedExternalGenerationJobIdsRef.current.clear();
     setExternalGenerationTasks([]);
     setExternalGenerationTaskOverview(null);
   }, [externalGenerationQueueOwnerKey]);
@@ -4998,7 +5002,13 @@ export function PlatformEntryFlowShellImpl({
       })
         .then((response) => {
           if (!disposed) {
-            setExternalGenerationTasks(response.tasks);
+            const locallyAcknowledgedJobIds =
+              locallyAcknowledgedExternalGenerationJobIdsRef.current;
+            setExternalGenerationTasks(
+              response.tasks.filter(
+                (task) => !locallyAcknowledgedJobIds.has(task.jobId),
+              ),
+            );
             setExternalGenerationTaskOverview(response.overview);
           }
         })
@@ -5343,6 +5353,9 @@ export function PlatformEntryFlowShellImpl({
       }
 
       const acknowledgedJobIds = new Set(taskJobIds);
+      const locallyAcknowledgedJobIds =
+        locallyAcknowledgedExternalGenerationJobIdsRef.current;
+      taskJobIds.forEach((jobId) => locallyAcknowledgedJobIds.add(jobId));
       setExternalGenerationTasks((current) =>
         current.filter((task) => !acknowledgedJobIds.has(task.jobId)),
       );
@@ -5372,6 +5385,11 @@ export function PlatformEntryFlowShellImpl({
           if (dismissKey) {
             acknowledgingKeys.delete(dismissKey);
           }
+          taskJobIds.forEach((jobId) =>
+            locallyAcknowledgedExternalGenerationJobIdsRef.current.delete(
+              jobId,
+            ),
+          );
         });
     },
     [],