Add EIP: Increase Calldata Floor Cost to 96

Summary

This PR adds a new Standards Track (Core) EIP proposing to raise the calldata floor cost from 64/64 to 96/96 gas per byte.

Motivation

The 21,000-gas ETH transfer anchors both the execution and bandwidth dimensions of a block. A transfer-full block carries an irreducible byte density (~0.0105 bytes/gas) that no pricing instrument can touch without charging more than 21,000 gas. At the current floor of 64 gas/byte (set by EIP-7976), a pure-calldata block has a density of 1/64 ≈ 0.0156 bytes/gas — roughly 1.49× the transfer anchor — making pure calldata the binding bandwidth constraint on the gas limit.

What it does

Raising the floor to F* = ceil(1 / 0.01052) = 96 gas/byte brings pure-calldata density to 1/96 ≈ 0.0104 bytes/gas, at or just below the transfer anchor. This:

• Aligns worst-case pure-calldata density with the irreducible ETH-transfer anchor
• Removes pure calldata as the binding bandwidth constraint, creating headroom for gas limit increases
• Preserves the existing exemption for transactions with significant EVM computation (regular DeFi/transfer users unaffected)
• Further incentivizes blob usage for data availability

Specification

Updates TOTAL_COST_FLOOR_PER_TOKEN from 16 to 24 (96 gas/byte), retaining the EIP-7623 token abstraction for consistency. STANDARD_TOKEN_COST stays at 4.