Boost Fusaka Enhances Smart Contract Security and Scalability

Fusaka upgrade caps transaction gas at 2^24 (~16.78M) via EIP-7825, limits MODEXP input size to 8192 bits (EIP-7823), and raises MODEXP gas costs (EIP-7883). EIP-7939 adds CLZ opcode; Solidity 0.8.31 supports it. EIP-7951 introduces P256VERIFY precompile for secp256r1 with 160-byte input. Multiple EIPs enhance scaling and data availability. L2 and security implications require developer vigilance.