feat: Return startingAnchorInputs as bytes

The op-deployer tooling does not support structs, therefore we need to
return a more generic type for compatibility.

op-chain-ops/deployer/opsm/opchain.go

@@ -17,10 +17,11 @@ type DeployOPChainInput struct {
 	Proposer               common.Address
 	Challenger             common.Address
 
-	BasefeeScalar     uint32
-	BlobBaseFeeScalar uint32
-	L2ChainId         *big.Int
-	Opsm              common.Address
+	BasefeeScalar       uint32
+	BlobBaseFeeScalar   uint32
+	L2ChainId           *big.Int
+	StartingAnchorRoots []byte
+	Opsm                common.Address
 }
 
 func (input *DeployOPChainInput) InputSet() bool {

op-chain-ops/deployer/pipeline/opchain.go

@@ -62,6 +62,7 @@ func DeployOPChain(ctx context.Context, env *Env, intent *state.Intent, st *stat
 						BasefeeScalar:          1368,
 						BlobBaseFeeScalar:      801949,
 						L2ChainId:              chainID.Big(),
+						StartingAnchorRoots:    []byte{},
 						Opsm:                   st.ImplementationsDeployment.OpsmAddress,
 					},
 				)

packages/contracts-bedrock/scripts/DeployOPChain.s.sol

@@ -133,13 +133,15 @@ contract DeployOPChainInput is BaseDeployIO {
         return _l2ChainId;
     }
 
-    function startingAnchorRoots() public view returns (AnchorStateRegistry.StartingAnchorRoot[] memory) {
+    function startingAnchorRoots() public view returns (bytes memory) {
         // TODO: figure out how to assert this properly.
         // Per mofi: It may make sense to not set any startingAnchor roots if you're running permissioned games for a
         // new chain and you don't yet have a genesis state available for the initial anchor.
         // And provided it'll remain permissioned unless the anchor state is fixed.
         require(_startingAnchorRoots.length > 0, "DeployOPChainInput: not set");
-        return _startingAnchorRoots;
+        // The op-deployer tooling does not support structs, therefore we need to
+        // return a more generic type for compatibility.
+        return abi.encode(_startingAnchorRoots);
     }
 
     // TODO: Check that opsm is proxied and it has an implementation.

packages/contracts-bedrock/src/L1/OPStackManager.sol

@@ -55,7 +55,7 @@ contract OPStackManager is ISemver, Initializable {
         uint32 basefeeScalar;
         uint32 blobBasefeeScalar;
         uint256 l2ChainId;
-        AnchorStateRegistry.StartingAnchorRoot[] startingAnchorRoots;
+        bytes startingAnchorRoots;
     }
 
     /// @notice The full set of outputs from deploying a new OP Stack chain.