fix(web): use signed URLs for generated video downloads

apps/web/src/pages/workspace/ProjectGeneration.tsx

@@ -2,7 +2,7 @@ import React, { useEffect, useMemo, useState } from 'react';
 import { useLocation, useParams } from 'react-router-dom';
 import { Alert, Button, Card, Form, Input, Select, Space, Typography, message } from 'antd';
 import { useMutation, useQuery } from '@tanstack/react-query';
-import { createGenerationTask, getGenerationResults, getGenerationTask } from '@/api/generation';
+import { createGenerationTask, getGeneratedVideoDownloadUrl, getGenerationResults, getGenerationTask } from '@/api/generation';
 import { getAssetLibraries } from '@/api/assets';
 import { getProject } from '@/api/projects';
 import { useAuthStore } from '@/store/authStore';
@@ -124,6 +124,15 @@ const ProjectGeneration: React.FC = () => {
     ? humanizeGenerationError(taskQuery.data.error_message)
     : '';
 
+  const openSignedDownload = async (videoId: string) => {
+    try {
+      const url = await getGeneratedVideoDownloadUrl(videoId);
+      window.open(url, '_blank', 'noopener,noreferrer');
+    } catch (error: any) {
+      message.error(error.response?.data?.detail || '获取下载地址失败');
+    }
+  };
+
   return (
     <div style={{ padding: 24 }}>
       <Card title="项目生成任务">
@@ -196,7 +205,7 @@ const ProjectGeneration: React.FC = () => {
               {resultsQuery.data.map((item) => (
                 <Space key={item.id}>
                   <Typography.Text>{item.name}</Typography.Text>
-                  <Button type="link" href={item.file_url} target="_blank" rel="noreferrer">
+                  <Button type="link" onClick={() => openSignedDownload(item.id)}>
                     下载/查看
                   </Button>
                 </Space>

apps/web/src/pages/workspace/ProjectResults.tsx

@@ -62,14 +62,9 @@ const ProjectResults: React.FC = () => {
                     </Space>
                   }
                   description={
-                    <Space direction="vertical" size={4}>
-                      <Typography.Text copyable ellipsis style={{ maxWidth: 720 }}>
-                        {item.file_url}
-                      </Typography.Text>
-                      <Button type="link" href={item.file_url} target="_blank" rel="noreferrer" style={{ padding: 0 }}>
-                        直接查看公开文件
-                      </Button>
-                    </Space>
+                    <Typography.Text copyable ellipsis style={{ maxWidth: 720 }}>
+                      {item.name}
+                    </Typography.Text>
                   }
                 />
               </List.Item>