fix(cover): use bare public URL for video since OSS uploads/* public read is enabled

- Changed get_download_url(expires_seconds=3600) to get_url() in cover.py
- OSS Bucket Policy now allows anonymous reads on uploads/*
- Bare URL verified: HEAD returns 200 for video files
- Eliminates signed URL encoding issues that caused MediaKit 403

apps/api/app/api/routes/templates_editor/cover.py

@@ -199,7 +199,7 @@ def editor_generate_cover(
                 first_asset = asset_repo.get(body.asset_ids[0])
                 if first_asset and first_asset.storage_key:
                     storage_svc = get_shared_storage_service()
-                    primary_video_url = storage_svc.get_download_url(first_asset.storage_key, expires_seconds=3600)
+                    primary_video_url = storage_svc.get_url(first_asset.storage_key)
                     logger.info(
                         "获取视频URL用于封面生成: asset_id=%s url=%s",
                         body.asset_ids[0],

apps/web/test-results/.last-run.json

@@ -0,0 +1,4 @@
+{
+  "status": "passed",
+  "failedTests": []
+}

fix_confirm.py

@@ -0,0 +1,105 @@
+"""Fix: Pass previewTaskId to useGenerateVideo so confirm generation reuses preview."""
+import sys
+
+# ── Fix 1: useStep4Preview.ts — expose selectedTaskId ──
+filepath1 = 'apps/web/src/pages/generate/hooks/useStep4Preview.ts'
+with open(filepath1, 'r') as f:
+    content1 = f.read()
+
+# Add selectedTaskId computation before the return block
+old_return_block = '''  return {
+    templateName,
+    materialCount,
+    duration,
+    videoRatio,
+    // 多预览状态
+    items,
+    selectedIndex,
+    setSelectedIndex,
+    previewCount,
+    // 综合状态
+    previewStatus,
+    previewResult: selectedResult,
+    previewError,
+    progress,
+    canProceed,
+    allReady,
+    anyReady,
+    anyGenerating,
+    generatePreview,
+    regeneratePreview,
+  }'''
+
+new_return_block = '''  /** 当前选中预览的 taskId（用于确认生成时复用预览产物） */
+  const selectedTaskId = selectedResult?.taskId ?? ""
+
+  return {
+    templateName,
+    materialCount,
+    duration,
+    videoRatio,
+    // 多预览状态
+    items,
+    selectedIndex,
+    setSelectedIndex,
+    previewCount,
+    // 综合状态
+    previewStatus,
+    previewResult: selectedResult,
+    previewError,
+    progress,
+    canProceed,
+    allReady,
+    anyReady,
+    anyGenerating,
+    generatePreview,
+    regeneratePreview,
+    // 确认生成复用预览产物
+    selectedTaskId,
+  }'''
+
+if old_return_block not in content1:
+    print('ERROR: return block not found in useStep4Preview.ts!')
+    sys.exit(1)
+
+content1 = content1.replace(old_return_block, new_return_block)
+
+with open(filepath1, 'w') as f:
+    f.write(content1)
+print('OK: useStep4Preview.ts updated')
+
+# ── Fix 2: GeneratePage.tsx — pass previewTaskId to useGenerateVideo ──
+filepath2 = 'apps/web/src/pages/generate/GeneratePage.tsx'
+with open(filepath2, 'r') as f:
+    content2 = f.read()
+
+old_generate_call = '''    generateCount,
+  })'''
+
+# Find the useGenerateVideo call context
+if 'generateCount,\n  })' not in content2:
+    # Try with the closing pattern
+    old_pattern = '''    autoSubtitles,
+    bgm,
+    generateCount,
+  })'''
+    if old_pattern not in content2:
+        print('ERROR: useGenerateVideo call not found in GeneratePage.tsx!')
+        # Debug: show the area around the call
+        idx = content2.find('useGenerateVideo({')
+        if idx >= 0:
+            print(f'Found useGenerateVideo at index {idx}')
+            print(repr(content2[idx:idx+600]))
+        sys.exit(1)
+
+new_pattern = '''    autoSubtitles,
+    bgm,
+    generateCount,
+    previewTaskId: step4Preview.selectedTaskId,
+  })'''
+
+content2 = content2.replace(old_pattern, new_pattern)
+
+with open(filepath2, 'w') as f:
+    f.write(content2)
+print('OK: GeneratePage.tsx updated')