Fix IPv6 TCP tunnel display formatting (#1980)

Normalize composite tunnel display values before rendering peer and
debug output so IPv6 tunnel types no longer append `6` to the port.

- Preserve prefixes like `txt-` while converting tunnel schemes to
  their IPv6 form.
- Recover malformed values such as `txt-tcp://...:110106` into
  `txt-tcp6://...:11010`.
- Reuse the normalized remote address display in CLI debug output.

easytier/src/tunnel/wireguard.rs

@@ -538,6 +538,9 @@ impl WgTunnelListener {
                         remote_addr: Some(
                             build_url_from_socket_addr(&addr.to_string(), "wg").into(),
                         ),
+                        resolved_remote_addr: Some(
+                            build_url_from_socket_addr(&addr.to_string(), "wg").into(),
+                        ),
                     }),
                 ));
                 if let Err(e) = conn_sender.send(tunnel) {
@@ -685,6 +688,9 @@ impl WgTunnelConnector {
                 tunnel_type: "wg".to_owned(),
                 local_addr: Some(super::build_url_from_socket_addr(&local_addr, "wg").into()),
                 remote_addr: Some(addr_url.into()),
+                resolved_remote_addr: Some(
+                    super::build_url_from_socket_addr(&addr.to_string(), "wg").into(),
+                ),
             }),
             Some(Box::new(wg_peer)),
         ));