Add VIP: Interstellar Part 1 - EVM Upgrades

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This PR introduces the Interstellar EVM Upgrade Specification, which aligns the VeChainThor EVM with the Ethereum Cancun, Prague and Osaka releases. VeChainThor's EVM currently targets Shanghai, adopted as part of Galactica (VIP-242); this proposal advances it by three Ethereum releases in a single fork.

This is Part 1 of the Interstellar upgrade. Ethereum transaction equivalence will be specified in a separate follow-up VIP.

Opcodes

• EIP-1153 — TLOAD / TSTORE transient storage, 100 gas each
• EIP-5656 — MCOPY memory copying instruction
• EIP-6780 — SELFDESTRUCT restricted to contracts created in the same execution
• EIP-7939 — CLZ count-leading-zeros opcode

Precompiled contracts

• EIP-2537 — BLS12-381 curve operations at addresses 0x0b through 0x11
• EIP-7951 — secp256r1 P256VERIFY at address 0x0100
• EIP-7823 — upper bounds on MODEXP inputs
• EIP-7883 — MODEXP gas cost increase

Other

• EIP-2935 — historical block hashes served from state
• EIP-7825 — per-transaction gas cap of 2^24
• EIP-7934 — 8 MiB limit on the RLP-encoded block

All gas constants and precompile addresses are adopted unchanged from the referenced EIPs. With these changes VeChainThor adopts the complete set of execution layer EIPs from the Osaka upgrade; the Osaka EIPs not adopted concern blobs and the beacon chain.

Deviations from Ethereum. The VIP documents each point where observable behaviour differs, so that contract authors porting code between the two networks are not caught out:

• EIP-7883 — MODEXP gas cost increase

Other

• EIP-2935 — historical block hashes served from state
• EIP-7825 — per-transaction gas cap of 2^24
• EIP-7934 — 8 MiB limit on the RLP-encoded block

All gas constants and precompile addresses are adopted unchanged from the referenced EIPs. With these changes VeChainThor adopts the complete set of execution layer EIPs from the Osaka upgrade; the Osaka EIPs not adopted concern blobs and the beacon chain.