Results 3 issues of erlkonig

Modified the `cp` action to support folder copy It works like normal `cp -r`, source directory is copied to destination directory as a folder: eg. source is `/home/ubuntu/setup` and destination...

set dht_server.addr to '::' to enable both ipv4 and ipv6 set dht_server.addr to '0.0.0.0' to enable ipv4 only set dht_server.addr to server's global ipv6 address to enable ipv6 only currently...

![20250806_160321.jpg](https://github.com/user-attachments/assets/c4810c62-b104-4542-b5b6-b1e2330359ac) ![20250806_160457.jpg](https://github.com/user-attachments/assets/e1176594-c9a2-4062-a9aa-4f33433bb3cd)