chore: 移除调试日志

- 移除下载功能中的 console.log 调试代码
- 改为 TODO 注释标记待实现

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/app/agency/review/page.tsx

@@ -158,8 +158,7 @@ function ScriptTaskCard({ task }: { task: ScriptTask }) {
 
   const handleDownload = (e: React.MouseEvent) => {
     e.stopPropagation()
-    // 模拟下载
-    console.log('下载脚本:', task.fileName)
+    // TODO: 实现实际下载逻辑
   }
 
   return (
@@ -227,8 +226,7 @@ function VideoTaskCard({ task }: { task: VideoTask }) {
 
   const handleDownload = (e: React.MouseEvent) => {
     e.stopPropagation()
-    // 模拟下载
-    console.log('下载视频:', task.fileName)
+    // TODO: 实现实际下载逻辑
   }
 
   return (