Fix ARP incomplete entries and Art-Net broadcast reception

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tendrils.go

@@ -34,6 +34,7 @@ type Tendrils struct {
 	activeInterfaces map[string]context.CancelFunc
 	nodes            *Nodes
 	artnet           *ArtNetNodes
+	artnetConn       *net.UDPConn
 	danteFlows       *DanteFlows
 	errors           *ErrorTracker
 	ping             *PingManager
@@ -158,6 +159,10 @@ func (t *Tendrils) Run() {
 		go t.pollARP(ctx)
 	}
 
+	if !t.DisableArtNet {
+		go t.startArtNetListener(ctx)
+	}
+
 	ticker := time.NewTicker(1 * time.Second)
 	defer ticker.Stop()
 
@@ -294,7 +299,7 @@ func (t *Tendrils) startInterface(ctx context.Context, iface net.Interface) {
 		go t.listenMDNS(ctx, iface)
 	}
 	if !t.DisableArtNet {
-		go t.listenArtNet(ctx, iface)
+		go t.startArtNetPoller(ctx, iface)
 	}
 	if !t.DisableDante {
 		go t.listenDante(ctx, iface)