fix(protocol): fix liveness bond related tokenomics issue (#16684)

Author: dantaik

packages/protocol/contracts/L1/TaikoData.sol

@@ -106,7 +106,7 @@ library TaikoData {
         uint96 contestBond;
         uint64 timestamp; // slot 6 (90 bits)
         uint16 tier;
-        uint8 contestations;
+        uint8 __reserved1;
     }
 
     /// @dev Struct containing data required for verifying a block.

packages/protocol/contracts/L1/TaikoErrors.sol

@@ -11,10 +11,10 @@ pragma solidity 0.8.24;
 abstract contract TaikoErrors {
     error L1_ALREADY_CONTESTED();
     error L1_ALREADY_PROVED();
-    error L1_ASSIGNED_PROVER_NOT_ALLOWED();
     error L1_BLOB_NOT_AVAILABLE();
     error L1_BLOB_NOT_FOUND();
     error L1_BLOCK_MISMATCH();
+    error L1_CANNOT_CONTEST();
     error L1_INVALID_BLOCK_ID();
     error L1_INVALID_CONFIG();
     error L1_INVALID_GENESIS_HASH();

packages/protocol/contracts/L1/TaikoEvents.sol

@@ -27,21 +27,17 @@ abstract contract TaikoEvents {
     );
     /// @dev Emitted when a block is verified.
     /// @param blockId The ID of the verified block.
-    /// @param assignedProver The block's assigned prover.
     /// @param prover The prover whose transition is used for verifying the
     /// block.
     /// @param blockHash The hash of the verified block.
     /// @param stateRoot The block's state root.
     /// @param tier The tier ID of the proof.
-    /// @param contestations Number of total contestations.
     event BlockVerified(
         uint256 indexed blockId,
-        address indexed assignedProver,
         address indexed prover,
         bytes32 blockHash,
         bytes32 stateRoot,
-        uint16 tier,
-        uint8 contestations
+        uint16 tier
     );
 
     /// @notice Emitted when some state variable values changed.

packages/protocol/contracts/L1/TaikoL1.sol

@@ -138,18 +138,8 @@ contract TaikoL1 is EssentialContract, ITaikoL1, TaikoEvents, TaikoErrors {
     /// @notice Gets the details of a block.
     /// @param _blockId Index of the block.
     /// @return blk_ The block.
-    /// @return ts_ The transition used to verify this block.
-    function getBlock(uint64 _blockId)
-        public
-        view
-        returns (TaikoData.Block memory blk_, TaikoData.TransitionState memory ts_)
-    {
-        uint64 slot;
-        (blk_, slot) = LibUtils.getBlock(state, getConfig(), _blockId);
-
-        if (blk_.verifiedTransitionId != 0) {
-            ts_ = state.transitions[slot][blk_.verifiedTransitionId];
-        }
+    function getBlock(uint64 _blockId) public view returns (TaikoData.Block memory blk_) {
+        (blk_,) = LibUtils.getBlock(state, getConfig(), _blockId);
     }
 
     /// @notice Gets the state transition for a specific block.
@@ -167,10 +157,25 @@ contract TaikoL1 is EssentialContract, ITaikoL1, TaikoEvents, TaikoErrors {
         return LibUtils.getTransition(state, getConfig(), _blockId, _parentHash);
     }
 
+    /// @notice Gets the state transition for a specific block.
+    /// @param _blockId Index of the block.
+    /// @param _tid The transition id.
+    /// @return The state transition data of the block.
+    function getTransition(
+        uint64 _blockId,
+        uint32 _tid
+    )
+        public
+        view
+        returns (TaikoData.TransitionState memory)
+    {
+        return LibUtils.getTransition(state, getConfig(), _blockId, _tid);
+    }
     /// @notice Gets the state variables of the TaikoL1 contract.
     /// @dev This method can be deleted once node/client stops using it.
     /// @return State variables stored at SlotA.
     /// @return State variables stored at SlotB.
+
     function getStateVariables()
         public
         view