feat: audit api, sdwan persist, relay fallback updates

internal/server/sdwan.go

@@ -121,5 +121,21 @@ func normalizeSDWAN(c protocol.SDWANConfig) protocol.SDWANConfig {
 		c.Nodes = append(c.Nodes, protocol.SDWANNode{Node: node, IP: ip})
 	}
 	sort.Slice(c.Nodes, func(i, j int) bool { return c.Nodes[i].Node < c.Nodes[j].Node })
+
+	// de-dup subnet proxies by node+cidr
+	if len(c.SubnetProxies) > 0 {
+		m2 := make(map[string]protocol.SubnetProxy)
+		for _, sp := range c.SubnetProxies {
+			if sp.Node == "" || sp.VirtualCIDR == "" || sp.LocalCIDR == "" {
+				continue
+			}
+			key := sp.Node + "|" + sp.VirtualCIDR + "|" + sp.LocalCIDR
+			m2[key] = sp
+		}
+		c.SubnetProxies = c.SubnetProxies[:0]
+		for _, sp := range m2 {
+			c.SubnetProxies = append(c.SubnetProxies, sp)
+		}
+	}
 	return c
 }