OHM v1 Migrator: Defund OHM v1 TokenMigrator, introduce V1Migrator

[0xJem]

• MS batch and OCG proposal to defund the OHM v1 TokenMigrator
• New policy, LegacyMigrator, which allows for OHM v1 holders (whitelisted via a merkle tree) to migrate to OHM v2 in the future, without having gOHM/OHMv2 sitting in a contract

Summary by CodeRabbit

Release Notes

• New Features

  • Added OHM v1 to v2 migration capability via governance proposal and helper contracts for seamless token transitions.
  • Introduced fork testing infrastructure enabling local protocol testing against mainnet state.
  • Added deployment tooling for migration-related contracts and configuration management.

• Documentation

  • Added comprehensive migration workflow guide and audit documentation for the v1 migration system.

• Chores

  • Updated dependencies (safe-utils, solidity-http) to latest versions.
  • Enhanced configuration for deployment and batch execution scripts.

---

Note

Implements a complete v1→v2 migration and defunding flow within Olympus V3.

• New policies: V1Migrator (merkle-allowlisted, partial migrations, MINTR cap, ERC165) and Burner (category-tracked burns, burner_admin role)
• Governance flow: MigrationProposal.sol + single-use MigrationProposalHelper.sol to pull gOHM from legacy TokenMigrator, unstake to OHM v2, and burn; enables V1Migrator with initial cap and revokes temp approvals/roles post-run
• Temp token: OwnedERC20 (tempOHM) for legacy treasury deposit during defunding
• Deploy/scripts: DeployV3 adds deployment for TempOHM/Burner/MigrationProposalHelper/V1Migrator; new safeBatchV2.sh, Anvil fork helpers (deal_gohm.sh, warp.sh), and proposal execution on fork in ProposalScript
• Docs/config: Added audit packet (audit/2026-01_v1-migrator/*), fork testing guide (documentation/FORK.md), tightened AGENTS guidelines, .mcp.json tool config, and address entries

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[0xJem]

Executed in OCG proposal 13