fix(tui): stop raw prints from corrupting the TUI

Log lines were painting over the alternate-screen TUI because some
messages bypassed the buffered logger and wrote straight to the
terminal:

- a live println! in GetPeerAddressHandler fired on every peer-address
  lookup (i.e. constantly while browsing/downloading) — routed to the
  buffered debug! logger.
- the TUI's error handlers used eprintln! in the render loop and in
  background search/download worker threads — routed to the buffered
  warn! logger so failures no longer smear the screen.

The logger already defers to a buffer while the TUI holds the screen; the
fix is simply to go through it instead of print!/eprintln!.

soulseek-rs-lib/src/message/server/get_peer_address.rs

@@ -22,7 +22,7 @@ impl MessageHandler<ServerMessage> for GetPeerAddressHandler {
         let port = message.read_int32();
         let obfuscation_type = message.read_int32();
         let obfuscated_port = message.read_int32() as u16;
-        println!("GetPeerAddressHandler: {username:?}"); // Debug print
+        crate::debug!("GetPeerAddressHandler: {username:?}");
 
         sender
             .send(ServerMessage::GetPeerAddressResponse {