fix: Add -nn flag to tcpdump commands to resolve macOS capture issues

internal/capture/capturer.go

@@ -55,7 +55,8 @@ func (c *Capturer) Start(iface string, port int) error {
 	// -l: line buffered for real-time output
 	// -A: print packet payload in ASCII
 	// -s 0: capture full packets
-	cmd := fmt.Sprintf("sudo tcpdump -l -A -s 0 -i %s port %d 2>/dev/null", iface, port)
+	// -nn: don't resolve hostnames or port names
+	cmd := fmt.Sprintf("sudo tcpdump -l -nn -A -s 0 -i %s port %d 2>/dev/null", iface, port)
 
 	stdout, stderr, cleanup, err := c.sshClient.StartCommand(cmd)
 	if err != nil {