Replace Hardhat ops runtime and local fork with standalone CLI and Anvil

[clement-ux]

Stack

• Base: Remove stale Hardhat tooling and scripts #2993
• This PR: replace runtime consumers
• Follow-up: remove Hardhat packages, config, oracle, and all remaining references

Summary

• add a standalone pnpm ops CLI preserving all 75 operational commands, parameters, signer modes, deployment lookups, and Foundry artifact loading
• make Anvil the canonical local/fork node for mainnet, Arbitrum, Base, Sonic, Plume, Hoodi, and HyperEVM
• connect Brownie to external Anvil networks and migrate impersonation, balance, and code mutation RPCs to anvil_*
• add a Safe batch comparator that requires identical chainId, to, value, and data while ignoring gas and metadata
• retain the old node only as the temporary A/B oracle for the follow-up removal PR
• run standalone ops, Brownie bridge, typecheck, and Anvil tests in CI

Verification

• pnpm test:tasks — 38 passing
• pnpm test:brownie — 4 passing
• pnpm test:anvil — 3 passing
• pnpm test:scripts — 66 passing
• pnpm test:layouts — 11 passing
• pnpm typecheck
• pnpm lint:js
• pnpm lint:ts
• pnpm prettier:check
• forge build contracts/ -j 1
• real Brownie A/B smoke against both local engines: Safe payloads matched on chainId, to, value, and data

Full Foundry unit compilation is left to CI because the monolithic local build exceeds the available memory; the partitioned production build passed.

[clement-ux]

Superseded by #2998 and #2999. The standalone ops CLI and the Anvil local-node migration are now separate reviewable steps instead of one combined change. The replacement stack preserves the intended final tree and has passing CI, so this PR is no longer needed.