Fix token info upon migration

[StanislavBreadless]

What ❔

• baseTokenAssetId supported on GW also
• baseToken() will receive with explicit panic if the asset handelr is not yet there

Why ❔

Checklist

• PR title corresponds to the body of PR (we generate changelog entries from PRs).
• Tests for the changes have been added / updated.
• Documentation comments have been added / updated.

[github-actions]

Changes to gas cost

Generated at commit: 6c1935293e6a362a1fc68c6ee698d085c4119f5b, compared to commit: d669a5f2ca0696f393ea86a714f4a8030dadd4b2

🧾 Summary (100% most significant diffs)

Contract	Method	Avg (+/-)	%
MessageRoot	addChainBatchRoot addNewChain getAggregatedRoot updateFullTree	+5,679 ❌ +64,260 ❌ +1,122 ❌ +15,715 ❌	+7.89% +41.78% +23.22% +37.65%
DummyBridgehubSetter	addTokenAssetId getHyperchain l2TransactionBaseCost setAddresses setHyperchain setSTM stateTransitionManager	+22 ❌ -11 ✅ +11 ❌ -66 ✅ -2 ✅ -2 ✅ -11 ✅	+0.06% -1.49% +0.97% -0.13% -0.00% -0.00% -0.53%
MerkleTest	calculateRoot(bytes32[],uint256,bytes32)	+1 ❌	+0.03%
DiamondProxy	finalizeEthWithdrawal requestL2Transaction	-1 ✅ -4 ✅	-0.00% -0.00%

---

Full diff report 👇

Contract	Deployment Cost (+/-)	Method	Min (+/-)	%	Avg (+/-)	%	Median (+/-)	%	Max (+/-)	%	# Calls (+/-)
MessageRoot	1,394,108 (+156,643)	addChainBatchRoot addNewChain chainRegistered getAggregatedRoot updateFullTree	27,646 (+60) 21,837 (0) 489 (+42) 955 (+122) 57,460 (+15,715)	+0.22% 0.00% +9.40% +14.65% +37.65%	77,616 (+5,679) 218,081 (+64,260) 1,489 (+42) 5,955 (+1,122) 57,460 (+15,715)	+7.89% +41.78% +2.90% +23.22% +37.65%	102,601 (+8,488) 283,496 (+85,680) 1,489 (+42) 5,955 (+1,122) 57,460 (+15,715)	+9.02% +43.31% +2.90% +23.22% +37.65%	102,601 (+8,488) 283,496 (+85,680) 2,489 (+42) 10,955 (+2,122) 57,460 (+15,715)	+9.02% +43.31% +1.72% +24.02% +37.65%	3 (0) 4 (0) 6 (0) 2 (0) 1 (0)
DummyBridgehubSetter	4,244,500 (+60,584)	addStateTransitionManager addTokenAssetId admin getHyperchain l2TransactionBaseCost owner proveL1ToL2TransactionStatus proveL2LogInclusion removeStateTransitionManager setAddresses setHyperchain setPendingAdmin setSTM stateTransitionManager	23,857 (0) 24,174 (+22) 435 (-11) 727 (-11) 1,148 (+11) 430 (-11) 0 (0) 0 (0) 23,833 (0) 51,043 (-66) 111,344 (0) 26,003 (0) 44,253 (0) 575 (-11)	0.00% +0.09% -2.47% -1.49% +0.97% -2.49% +∞% +∞% 0.00% -0.13% 0.00% 0.00% 0.00% -1.88%	41,135 (+1) 36,617 (+22) 1,435 (-11) 727 (-11) 1,148 (+11) 1,988 (-11) 1,410 (-4) 1,551 (-5) 25,469 (+2) 51,043 (-66) 111,380 (-2) 41,661 (-1) 44,289 (-2) 2,075 (-11)	+0.00% +0.06% -0.76% -1.49% +0.97% -0.55% -0.28% -0.32% +0.01% -0.13% -0.00% -0.00% -0.00% -0.53%	47,583 (0) 36,972 (+22) 1,435 (-11) 727 (-11) 1,148 (+11) 2,430 (-11) 1,008 (+6) 1,137 (+9) 25,833 (0) 51,043 (-66) 111,380 (-24) 49,685 (0) 44,289 (-24) 2,575 (-11)	0.00% +0.06% -0.76% -1.49% +0.97% -0.45% +0.60% +0.80% 0.00% -0.13% -0.02% 0.00% -0.05% -0.43%	47,583 (0) 47,598 (+22) 2,435 (-11) 727 (-11) 1,148 (+11) 2,430 (-11) 3,674 (+7) 3,929 (+7) 26,245 (0) 51,043 (-66) 111,404 (0) 49,901 (0) 44,313 (0) 2,575 (-11)	0.00% +0.05% -0.45% -1.49% +0.97% -0.45% +0.19% +0.18% 0.00% -0.13% 0.00% 0.00% 0.00% -0.43%	3,584 (0) 1,536 (0) 2,048 (0) 256 (0) 256 (0) 1,314 (0) 512 (0) 512 (0) 2,048 (0) 512 (0) 768 (0) 1,280 (0) 768 (0) 1,024 (0)
MerkleTest	442,705 (-12)	calculateRoot(bytes32[],uint256,bytes32)	571 (0)	0.00%	2,931 (+1)	+0.03%	2,982 (0)	0.00%	3,037 (+11)	+0.36%	265 (0)
MerkleTreeNoSort	534,636 (0)	getProof	2,594 (0)	0.00%	32,737 (-2)	-0.01%	33,193 (0)	0.00%	33,215 (0)	0.00%	277 (0)
DiamondProxy	2,428,645 (0)	finalizeEthWithdrawal requestL2Transaction	37,779 (0) 33,295 (0)	0.00% 0.00%	76,534 (-1) 130,192 (-4)	-0.00% -0.00%	77,003 (+12) 167,108 (-24)	+0.02% -0.01%	77,303 (0) 191,247 (0)	0.00% 0.00%	257 (0) 771 (0)
L1ERC20Bridge	1,109,528 (+12)
DiamondCutTestContract	1,824,527 (+12)
PriorityTreeTest	907,968 (-12)
StateTransitionManager	3,855,371 (-12)
ValidatorTimelock	917,747 (-12)
GenerateForceDeploymentsData	1,313,275 (+62,058)
UtilsFacet	704,752 (+12)

[github-actions]

Coverage after merging sb-fix-token-info-upon-migration into kl/sync-layer-reorg will be

87.03%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
../da-contracts/contracts
RollupL1DAValidator.sol	61.04%	31.25%	83.33%	67.27%	145, 148, 148, 148, 150, 183–184, 187–188, 27, 27–28, 30, 30–31, 34, 36–37, 41–42, 65, 67, 67, 67–68, 70, 80, 80–81
contracts/bridge
BridgeHelper.sol	100%	100%	100%	100%
L1AssetRouter.sol	93.95%	85.07%	94.87%	96.63%	139–140, 155–156, 216, 236, 285, 338, 390, 550, 571, 613, 732–733, 754–755, 896
L1ERC20Bridge.sol	97.50%	100%	100%	96.55%	116
L1NativeTokenVault.sol	92.31%	93.33%	78.57%	94.19%	175–176, 256, 284, 289, 46–47
contracts/bridgehub
Bridgehub.sol	66.67%	35.90%	77.50%	77.13%	111, 111, 111, 116, 122, 127, 132, 164–165, 208, 208–209, 211–212, 212, 212–213, 219–220, 220, 220–221, 221, 221, 223–224, 224, 224–225, 233–234, 248–249, 296–297, 327–328, 330–331, 333–335, 337–338, 341–342, 345, 347–348, 350–351, 378–379, 389–390, 394, 394–395, 397, 425, 449–451, 454, 454–455, 499, 507–509, 513, 513–514, 516, 530–531, 543–544, 583, 607–608, 687, 690–691, 695–696, 724–725, 738, 783, 788, 793, 798
MessageRoot.sol	91.07%	63.64%	100%	96.97%	116–117, 148, 69, 87
STMDeploymentTracker.sol	79.07%	50%	90%	94.74%	115, 119, 34, 41, 64, 91, 94, 96
contracts/common
ReentrancyGuard.sol	90%	66.67%	100%	92.86%	78–79
contracts/common/libraries
DataEncoding.sol	80%	100%	100%	66.67%	72, 80
DynamicIncrementalMerkle.sol	74.42%	100%	80%	72.22%	67–70, 72–74, 76–78
FullMerkle.sol	100%	100%	100%	100%
L2ContractHelper.sol	47.06%	0%	60%	54.17%	100, 104, 29–30, 35–36, 39–40, 54, 56, 56–57, 61, 61–62, 70
Merkle.sol	96.61%	90.91%	100%	97.67%	80–81
MessageHashing.sol	100%	100%	100%	100%
SemVer.sol	100%	100%	100%	100%
UncheckedMath.sol	100%	100%	100%	100%
UnsafeBytes.sol	100%	100%	100%	100%
contracts/governance
ChainAdmin.sol	17.86%	0%	20%	21.05%	27–28, 39–40, 47–48, 56, 56–57, 60, 62–63, 63, 66, 69, 78, 78–79, 81
Governance.sol	98.15%	94.74%	100%	98.55%	44–45
contracts/state-transition
StateTransitionManager.sol	66.88%	33.33%	58.82%	77.45%	108, 137–138, 140–141, 143–144, 146–147, 202–203, 247, 254, 272, 278, 285, 297, 304, 311, 319, 326, 334, 341, 359, 361, 426, 445, 445, 445, 448, 448, 448, 450, 463, 468, 493, 74, 87–88
TestnetVerifier.sol	77.78%	66.67%	100%	75%	16, 32
ValidatorTimelock.sol	95.38%	83.33%	100%	95.45%	210, 83–84
Verifier.sol	89.88%	35.71%	96.30%	90.93%	1673–1674, 287–302, 305–308, 311–318, 321–328, 331–332, 335–336, 339, 384–385, 395–396, 406–407, 417–418, 428–429, 444–445, 454, 454–455, 904–905
contracts/state-transition/chain-deps
DiamondInit.sol	78%	45.45%	100%	86.49%	39–40, 42–43, 45–46, 48–49, 51–52, 77
DiamondProxy.sol	92.31%	75%	100%	100%	16, 27
contracts/state-transition/chain-deps/facets
Admin.sol	73.93%	38.18%	90.91%	85.82%	104–105, 115–116, 130, 130–131, 133–134, 157, 157, 157–158, 158, 158, 160, 239, 241, 254–255, 261, 278, 289–290, 295, 307, 307, 309, 309, 309, 315, 315, 315–316, 316, 316–318, 318, 318–319, 319, 319–321, 348, 350, 354, 363, 373, 377, 40, 40
Executor.sol	78.32%	64.94%	92.86%	81.37%	119–120, 201, 207–208, 208–209, 211, 211–212, 224, 224, 228, 228, 228, 252–253, 270, 273, 319, 319–320, 324, 328, 330–331, 337–338, 357–360, 362, 37, 418, 418, 418–421, 423, 426, 429–430, 447, 450–451, 453–455, 468–470, 531–532, 540–541, 563–564, 574–575, 626–627, 653–654
Getters.sol	81.82%	62.50%	82.22%	83.82%	110, 113, 119, 122, 133, 136, 178, 231, 237, 241, 65, 70, 85, 90
Mailbox.sol	82.27%	70.59%	89.66%	83.57%	153, 188, 198, 207–208, 233, 237, 237, 237, 240, 242–243, 245, 250, 252, 255–257, 262–265, 267–268, 274, 274, 274, 276, 279–280, 374–375, 54
ZkSyncHyperchainBase.sol	71.43%	71.43%	71.43%	71.43%	55, 55–56, 62, 62–63
contracts/state-transition/data-availability
CalldataDA.sol	100%	100%	100%	100%
CalldataDAGateway.sol	85.71%	66.67%	100%	100%	27–28
RelayedSLDAValidator.sol	96.67%	83.33%	100%	100%