chore: .gitignore添加num-server/uploads

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

.gitignore

@@ -6,3 +6,4 @@ admin/dist/
 admin/test-results/
 client/unpackage/
 *.local
+num-server/uploads/