[pull] main from bluealloy:main #218
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Add the SLOTNUM opcode (0x4B) that returns the slot number for the current block as specified in EIP-7843. The slot number is passed from the consensus layer via the execution payload. Changes: - Add SLOTNUM opcode constant at 0x4B in bytecode - Add slot_num field to BlockEnv struct - Add slot_num method to Block trait with default returning 0 - Add slot_num method to Host trait - Implement slot_num instruction gated behind AMSTERDAM hardfork - Gas cost: 2 (aligned with similar base-level opcodes)
* feat: add BAL (Block Access List) example Demonstrates EIP-7928 Block Access List usage: - Phase 1: Build BAL by executing transactions with with_bal_builder() - Phase 2: Use built BAL for re-execution with with_bal() The example uses a simple counter contract to show how storage writes are captured and indexed by transaction in the BAL. Amp-Thread-ID: https://ampcode.com/threads/T-019be006-e325-74af-8ccb-51f1a1e3e93d Co-authored-by: Amp <amp@ampcode.com> * fmt --------- Co-authored-by: Amp <amp@ampcode.com>
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