feat: add PortREST constant and NodePortsForMode lookup

Add REST (1317) to the canonical port set in NodePorts() and add
NodePortsForMode() which returns only the ports actually served by
a given node mode:

- validator: p2p, metrics
- full/archive: all 7 ports (evm-rpc, evm-ws, grpc, rest, p2p, rpc, metrics)
- seed: nil (not used in production Sei infrastructure)

This lets the controller derive which ports to open from the mode
rather than requiring manual port selection in the CRD.

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

Author: bdchatham

config.go

@@ -19,6 +19,7 @@ const (
 	PortEVMHTTP int32 = 8545
 	PortEVMWS   int32 = 8546
 	PortGRPC    int32 = 9090
+	PortREST    int32 = 1317
 	PortP2P     int32 = 26656
 	PortRPC     int32 = 26657
 	PortMetrics int32 = 26660
@@ -38,12 +39,37 @@ func NodePorts() []NodePort {
 		{"evm-rpc", PortEVMHTTP},
 		{"evm-ws", PortEVMWS},
 		{"grpc", PortGRPC},
+		{"rest", PortREST},
 		{"p2p", PortP2P},
 		{"rpc", PortRPC},
 		{"metrics", PortMetrics},
 	}
 }
 
+// NodePortsForMode returns the ports that are actually served by a node
+// running in the given mode.
+func NodePortsForMode(mode NodeMode) []NodePort {
+	switch mode {
+	case ModeValidator:
+		return []NodePort{
+			{"p2p", PortP2P},
+			{"metrics", PortMetrics},
+		}
+	case ModeFull, ModeArchive:
+		return []NodePort{
+			{"evm-rpc", PortEVMHTTP},
+			{"evm-ws", PortEVMWS},
+			{"grpc", PortGRPC},
+			{"rest", PortREST},
+			{"p2p", PortP2P},
+			{"rpc", PortRPC},
+			{"metrics", PortMetrics},
+		}
+	default:
+		return nil
+	}
+}
+
 // Pruning strategy constants.
 const (
 	PruningDefault    = "default"