docs: update validator reg inline docs (#486)

contracts/contracts/validator-registry/README.md

@@ -1,15 +1,20 @@
 # Validator Registry Design doc
 
-Validators are able to _opt-in to mev-commit_ in one of two ways:
+Validators are able to _opt-in to mev-commit_ in one of three ways:
 
 1. Restaking with the `MevCommitAVS` contract.
-2. Simple staking with the `VanillaRegistry` contract.
+2. Restaking with the `MevCommitMiddleware` contract.
+3. Simple staking with the `VanillaRegistry` contract.
 
-The `ValidatorOptInRouter` contract acts as a query router between both solutions, allowing any actor to query whether a group of validator pubkeys is opted-in to mev-commit.
+The `ValidatorOptInRouter` contract acts as a query router between all three solutions, allowing any actor to query whether a group of validator pubkeys is opted-in to mev-commit.
 
-## Mev-commit AVS - Restaking Solution
+## Mev-commit AVS - Eigenlayer Restaking Solution
 
-For more details on the Mev-commit AVS, please refer to the [Mev-commit AVS README](avs/README.md).
+For more details on the `MevCommitAVS` contract, please refer to the [MevCommitAVS README](avs/README.md).
+
+## Mev-commit Middleware - Symbiotic Restaking Solution
+
+For more details on the `MevCommitMiddleware` contract, please refer to the [MevCommitMiddleware README](middleware/README.md).
 
 ## Vanilla Registry - Simple Staking Solution
 

contracts/scripts/validator-registry/middleware/DeployMiddleware.s.sol

@@ -83,9 +83,10 @@ contract DeployHolesky is BaseDeploy {
         );
 
         INetworkMiddlewareService networkMiddlewareService = INetworkMiddlewareService(address(SymbioticHoleskyDevnetConsts.NETWORK_MIDDLEWARE_SERVICE));
-        if (networkMiddlewareService.middleware(msg.sender) == address(0)) {
-            networkMiddlewareService.setMiddleware(mevCommitMiddlewareProxy);
+        if (networkMiddlewareService.middleware(msg.sender) != address(0)) {
+            console.log("WARNING: overwriting existing middleware registration for network:", msg.sender);
         }
+        networkMiddlewareService.setMiddleware(mevCommitMiddlewareProxy);
 
         IBaseDelegator vault1Delegator = IBaseDelegator(address(SymbioticHoleskyDevnetConsts.VAULT_1_DELEGATOR));
         vault1Delegator.setMaxNetworkLimit(SUBNETWORK_ID, VAULT1_MAX_NETWORK_LIMIT);