WIP: Save agent roles integration work before CHORUS rebrand

- Agent roles and coordination features
- Chat API integration testing
- New configuration and workspace management

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

vendor/github.com/libp2p/go-nat/gateway.go

@@ -0,0 +1,17 @@
+package nat
+
+import (
+	"net"
+
+	"github.com/libp2p/go-netroute"
+)
+
+func getDefaultGateway() (net.IP, error) {
+	router, err := netroute.New()
+	if err != nil {
+		return nil, err
+	}
+
+	_, ip, _, err := router.Route(net.IPv4zero)
+	return ip, err
+}