fix: infra refund split for ArbitrumRetryTx by snapshotting MinBaseFee #3841
+32
−16
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Implemented consistent infra refund calculation for ArbitrumRetryTx by snapshotting infraFeePerGas as min(MinBaseFeeWei, effectiveBaseFee) at StartTxHook and using it in EndTxHook, preventing mid-execution MinBaseFee changes from skewing the refund split between infra and network while preserving the total amount refunded to the user; added a snapshot field to TxProcessor, initialized it only for retry transactions, and kept a safe fallback to current behavior to avoid impacting non-retry paths.