feat(protocol): add various small fixes based on quill report

packages/protocol/contracts/L1/TaikoData.sol

@@ -204,6 +204,6 @@ library TaikoData {
         mapping(bytes32 blobHash => uint256 since) reusableBlobs;
         SlotA slotA; // slot 6
         SlotB slotB; // slot 7
-        uint256[143] __gap;
+        uint256[43] __gap;
     }
 }

packages/protocol/contracts/L1/TaikoL1.sol

@@ -34,7 +34,7 @@ import "./TaikoEvents.sol";
 /// This contract doesn't hold any Ether. Ether deposited to L2 are held by the Bridge contract.
 contract TaikoL1 is EssentialContract, ITaikoL1, ITierProvider, TaikoEvents, TaikoErrors {
     TaikoData.State public state;
-    uint256[100] private __gap;
+    uint256[50] private __gap;
 
     modifier whenProvingNotPaused() {
         if (state.slotB.provingPaused) revert L1_PROVING_PAUSED();

packages/protocol/contracts/L1/TaikoToken.sol

@@ -25,6 +25,8 @@ import "../common/EssentialContract.sol";
 /// in the form of bonds. It is an ERC20 token with 18 decimal places of
 /// precision.
 contract TaikoToken is EssentialContract, ERC20SnapshotUpgradeable, ERC20VotesUpgradeable {
+    uint256[50] private __gap;
+
     error TKO_INVALID_ADDR();
 
     /// @notice Initializes the TaikoToken contract and mints initial tokens.

packages/protocol/contracts/L1/hooks/AssignmentHook.sol

@@ -49,6 +49,8 @@ contract AssignmentHook is EssentialContract, IHook {
     // get paid within this limit.
     uint256 public constant MAX_GAS_PAYING_PROVER = 50_000;
 
+    uint256[50] private __gap;
+
     event BlockAssigned(
         address indexed assignedProver, TaikoData.BlockMetadata meta, ProverAssignment assignment
     );

packages/protocol/contracts/L1/provers/GuardianProver.sol

@@ -20,6 +20,8 @@ import "./Guardians.sol";
 
 /// @title GuardianProver
 contract GuardianProver is Guardians {
+    uint256[50] private __gap;
+
     event GuardianApproval(
         address indexed addr, uint256 indexed blockId, bytes32 blockHash, bool approved
     );

packages/protocol/contracts/L1/tiers/OptimisticTierProvider.sol

@@ -18,6 +18,8 @@ import "../../common/EssentialContract.sol";
 import "./ITierProvider.sol";
 
 contract OptimisticTierProvider is EssentialContract, ITierProvider {
+    uint256[50] private __gap;
+
     error TIER_NOT_FOUND();
 
     /// @notice Initializes the contract with the provided address manager.

packages/protocol/contracts/L1/tiers/TestnetTierProvider.sol

@@ -26,6 +26,8 @@ import "./ITierProvider.sol";
 // these many tokens: 1,000,000,000 * 10% / 86400=1157 TOK per block, which is
 // about 722 USD.
 contract TestnetTierProvider is EssentialContract, ITierProvider {
+    uint256[50] private __gap;
+
     error TIER_NOT_FOUND();
 
     /// @notice Initializes the contract with the provided address manager.

packages/protocol/contracts/L2/TaikoL2.sol

@@ -53,7 +53,7 @@ contract TaikoL2 is CrossChainOwned {
     uint64 public gasExcess; // slot 3
     uint64 public lastSyncedBlock;
 
-    uint256[147] private __gap;
+    uint256[47] private __gap;
 
     event Anchored(bytes32 parentHash, uint64 gasExcess);
 

packages/protocol/contracts/bridge/Bridge.sol

@@ -67,6 +67,7 @@ contract Bridge is EssentialContract, IBridge {
     event MessageReceived(bytes32 indexed msgHash, Message message, bool isRecall);
     event MessageRecalled(bytes32 indexed msgHash);
     event MessageExecuted(bytes32 indexed msgHash);
+    event MessageRetried(bytes32 indexed msgHash);
     event MessageStatusChanged(bytes32 indexed msgHash, Status status);
     event MessageSuspended(bytes32 msgHash, bool suspended);
     event AddressBanned(address indexed addr, bool banned);
@@ -377,6 +378,7 @@ contract Bridge is EssentialContract, IBridge {
         } else if (isLastAttempt) {
             _updateMessageStatus(msgHash, Status.FAILED);
         }
+        emit MessageRetried(msgHash);
     }
 
     /// @notice Checks if the message was sent.

packages/protocol/contracts/common/AddressManager.sol

@@ -39,6 +39,7 @@ contract AddressManager is OwnerUUPSUpgradable, IAddressManager {
         uint64 indexed chainId, bytes32 indexed name, address newAddress, address oldAddress
     );
 
+    error AM_INVALID_PARAMS();
     error AM_UNSUPPORTED();
     /// @notice Initializes the owner for the upgradable contract.
 
@@ -60,6 +61,7 @@ contract AddressManager is OwnerUUPSUpgradable, IAddressManager {
         onlyOwner
     {
         address oldAddress = addresses[chainId][name];
+        if (newAddress == oldAddress) revert AM_INVALID_PARAMS();
         addresses[chainId][name] = newAddress;
         emit AddressSet(chainId, name, newAddress, oldAddress);
     }

packages/protocol/contracts/libs/LibAddress.sol

@@ -31,7 +31,7 @@ library LibAddress {
     /// @param amount The amount of Ether to send in wei.
     /// @param gasLimit The max amount gas to pay for this transaction.
     function sendEther(address to, uint256 amount, uint256 gasLimit) internal {
-        // Check for zero-value or zero-address transactions
+        // Check for zero-address transactions
         if (to == address(0)) revert ETH_TRANSFER_FAILED();
 
         // Attempt to send Ether to the recipient address

packages/protocol/contracts/tokenvault/BaseVault.sol

@@ -26,6 +26,8 @@ abstract contract BaseVault is
     IMessageInvocable,
     IERC165Upgradeable
 {
+    uint256[50] private __gap;
+
     error VAULT_PERMISSION_DENIED();
 
     modifier onlyFromBridge() {

packages/protocol/test/L1/TaikoL1TestBase.sol

@@ -112,7 +112,6 @@ abstract contract TaikoL1TestBase is TaikoTest {
         registerAddress("tier_provider", address(cp));
         registerAddress("signal_service", address(ss));
         registerAddress("guardian_prover", address(gp));
-        registerAddress("bridge", address(bridge));
         registerL2Address("taiko", address(L2));
         registerL2Address("signal_service", address(L2SS));
         registerL2Address("taiko_l2", address(L2));

packages/protocol/test/tokenvault/ERC20Vault.t.sol

@@ -153,8 +153,6 @@ contract TestERC20Vault is TaikoTest {
 
         addressManager.setAddress(destChainId, "signal_service", address(mockProofSignalService));
 
-        addressManager.setAddress(uint64(block.chainid), "bridge", address(bridge));
-
         addressManager.setAddress(uint64(block.chainid), "erc20_vault", address(erc20Vault));
 
         addressManager.setAddress(destChainId, "erc20_vault", address(destChainIdERC20Vault));