Investigation/bridge upgrade#530
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- Upgrade ethers v5 → v6, hardhat-ethers → @nomicfoundation/hardhat-ethers v3 - Replace hardhat-waffle with @nomicfoundation/hardhat-chai-matchers - Update typechain target to ethers-v6, bump typescript and prettier - Migrate BigNumber → bigint, ethers.utils.* → ethers.*, Contract → BaseContract - Add helpers/gnosis-safe.ts and helpers/ledger.ts for Safe transaction proposals - Add propose-upgrade-facet task for diamondCut via Gnosis Safe + Ledger signing - Update tsconfig target to ES2020 for BigInt operator support Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Forks mainnet at a post-upgrade block to verify that the else-if → else+require fix in NFTMainnetBridgingToPolygonFacet correctly reverts when a non-owner calls bridgeNFTsV1, and that the old buggy facet silently skipped the ownership check. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Queried on-chain Transfer events to identify the 82 unique stakers whose NFTs were stolen via the bridgeNFTsV1 ownership bypass. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…IDs, recovery task - Add adminMint, adminBurn, adminBurnBatch (onlyRole ADMIN) to PolyTellerNFT.sol - Resolve V1->V2 token IDs via convertV1TokenId at pre-attack block and add token_id_v2 column to CSV - Add query_v2_tokenids.sh script for reproducible V2 ID resolution - Add recover-stolen-nfts hardhat task: batch burns attacker tokens, mints replacements to victims Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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