feat: add P2P override key constants and StateSyncerOverrides helper

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: bdchatham

config.go

@@ -70,6 +70,14 @@ func NodePortsForMode(mode NodeMode) []NodePort {
 	}
 }
 
+// Override key constants for P2P configuration fields.
+const (
+	KeyP2PExternalAddress = "network.p2p.external_address"
+	KeyP2PMaxConnections  = "network.p2p.max_connections"
+	KeyP2PSendRate        = "network.p2p.send_rate"
+	KeyP2PRecvRate        = "network.p2p.recv_rate"
+)
+
 // Pruning strategy constants.
 const (
 	PruningDefault    = "default"

defaults.go

@@ -310,6 +310,16 @@ func SnapshotGenerationOverrides(keepRecent int32) map[string]string {
 	}
 }
 
+// StateSyncerOverrides returns the config overrides for nodes acting as
+// state-sync snapshot servers.
+func StateSyncerOverrides() map[string]string {
+	return map[string]string{
+		KeyP2PMaxConnections: "500",
+		KeyP2PSendRate:       "20971520",
+		KeyP2PRecvRate:       "20971520",
+	}
+}
+
 func defaultMoniker() string {
 	name, err := os.Hostname()
 	if err != nil {