devnet: handle devnet config irregularities

op-node/rollup/superchain.go

@@ -24,6 +24,7 @@ const (
 	pgnSepolia  = 58008
 	zoraGoerli  = 999
 	zoraMainnet = 7777777
+	labsDevnet  = 997
 )
 
 // LoadOPStackRollupConfig loads the rollup configuration of the requested chain ID from the superchain-registry.
@@ -59,13 +60,15 @@ func LoadOPStackRollupConfig(chainID uint64) (*Config, error) {
 	}
 
 	regolithTime := uint64(0)
-	// two goerli testnets test-ran Bedrock and later upgraded to Regolith.
+	// three goerli testnets test-ran Bedrock and later upgraded to Regolith.
 	// All other OP-Stack chains have Regolith enabled from the start.
 	switch chainID {
 	case baseGoerli:
 		regolithTime = 1683219600
 	case opGoerli:
 		regolithTime = 1679079600
+	case labsDevnet:
+		regolithTime = 1677984480
 	}
 
 	cfg := &Config{
@@ -99,5 +102,9 @@ func LoadOPStackRollupConfig(chainID uint64) (*Config, error) {
 	if superChain.Config.ProtocolVersionsAddr != nil { // Set optional protocol versions address
 		cfg.ProtocolVersionsAddress = common.Address(*superChain.Config.ProtocolVersionsAddr)
 	}
+	if chainID == labsDevnet {
+		cfg.ChannelTimeout = 120
+		cfg.MaxSequencerDrift = 1200
+	}
 	return cfg, nil
 }