add node names from hostname, lldp, and snmp

populate local node name from hostname. extract system name from lldp packets and snmp sysname oid. call logtree after node merges.

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

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

tendrils.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"log"
 	"net"
+	"os"
 	"time"
 )
 
@@ -49,6 +50,11 @@ func (t *Tendrils) populateLocalAddresses() {
 
 	root := t.nodes.nodes[0]
 
+	hostname, err := os.Hostname()
+	if err == nil {
+		root.Name = hostname
+	}
+
 	for _, iface := range interfaces {
 		if len(iface.HardwareAddr) > 0 {
 			macKey := iface.HardwareAddr.String()