fix task duration recording

apps/web/src/pages/WorkspacePage.tsx

@@ -812,7 +812,7 @@ function TaskRecord(props: { task: GatewayTask; token: string; onCopyRequestId:
       <TableCell>{props.task.apiKeyName || props.task.apiKeyPrefix || props.task.apiKeyId || '-'}</TableCell>
       <TableCell className="taskRecordTokenCell">{tokenUsage}</TableCell>
       <TableCell>{chargeText}</TableCell>
-      <TableCell>{formatDuration(props.task.responseDurationMs)}</TableCell>
+      <TableCell>{formatDuration(taskDurationMs(props.task))}</TableCell>
       <TableCell>{formatDateTime(props.task.createdAt)}</TableCell>
       <TableCell>
         <Button type="button" variant="ghost" size="sm" className="taskRecordJsonButton" title={taskErrorText(props.task) || '查看原始 JSON'} onClick={() => props.onOpenJson(props.task)}>
@@ -1029,7 +1029,7 @@ function taskAttemptMeta(attempt: NonNullable<GatewayTask['attempts']>[number])
     attempt.providerModelName || attempt.modelName || attempt.modelAlias,
     attempt.requestId ? `RequestID ${attempt.requestId}` : '',
     statusCode ? `状态码 ${statusCode}` : '',
-    attempt.responseDurationMs ? formatDuration(attempt.responseDurationMs) : '',
+    formatDuration(attemptDurationMs(attempt)),
   ].filter(Boolean);
   return values.join(' · ') || attempt.clientId || '-';
 }
@@ -1355,10 +1355,41 @@ function tokenValue(value: unknown) {
   return Number.isFinite(numericValue) ? numericValue : null;
 }
 
+function taskDurationMs(task: GatewayTask) {
+  return (
+    positiveDurationMs(task.responseDurationMs) ??
+    elapsedDurationMs(task.responseStartedAt, task.responseFinishedAt) ??
+    elapsedDurationMs(task.createdAt, task.finishedAt)
+  );
+}
+
+function attemptDurationMs(attempt: NonNullable<GatewayTask['attempts']>[number]) {
+  return (
+    positiveDurationMs(attempt.responseDurationMs) ??
+    elapsedDurationMs(attempt.responseStartedAt, attempt.responseFinishedAt) ??
+    elapsedDurationMs(attempt.startedAt, attempt.finishedAt)
+  );
+}
+
+function positiveDurationMs(value?: number) {
+  if (value === undefined || value === null) return undefined;
+  const numericValue = Number(value);
+  return Number.isFinite(numericValue) && numericValue > 0 ? numericValue : undefined;
+}
+
+function elapsedDurationMs(start?: string, end?: string) {
+  if (!start || !end) return undefined;
+  const startedAt = new Date(start).getTime();
+  const finishedAt = new Date(end).getTime();
+  if (!Number.isFinite(startedAt) || !Number.isFinite(finishedAt)) return undefined;
+  const elapsed = finishedAt - startedAt;
+  return elapsed > 0 ? Math.max(1, Math.round(elapsed)) : undefined;
+}
+
 function formatDuration(value?: number) {
   if (value === undefined || value === null) return '-';
   const milliseconds = Math.max(0, Math.round(value));
-  if (milliseconds === 0) return '0秒';
+  if (milliseconds === 0) return '-';
   if (milliseconds < 1000) return `${milliseconds}毫秒`;
   const totalSeconds = Math.round(milliseconds / 1000);
   const hours = Math.floor(totalSeconds / 3600);