feat: Add colored node labels by type and clean up display format

internal/config/network_map.go

@@ -56,7 +56,7 @@ func (nm *NetworkMap) FindByIP(ip string) *NetworkNode {
 // LabelForIP returns a human-readable label for an IP, or the IP itself if unknown
 func (nm *NetworkMap) LabelForIP(ip string) string {
 	if node := nm.FindByIP(ip); node != nil {
-		return node.Name + " (" + string(node.Type) + ")"
+		return node.Name
 	}
 	return ip
 }