release() only requires soldOut, targetsSet and targetsSetAt + 7 days <= block.timestamp. refundsOpen() returns true for the whole mint phase regardless of targets, and after sellout only while block.timestamp < targetsSetAt + 7 days. The README's own deployment plan is to call setLaunchTargets as soon as the later gacha/POL contracts exist, which is expected to be during the mint phase.

If sellout happens more than 7 days after that call, the review window has already been consumed by the mint phase: in the very transaction that sells out, refundsOpen() flips to false and release() becomes callable by anyone, including the wallet that minted the last tokens.

Holders who minted in the final days therefore never get the post-sellout review described in README ('After sellout and the seven-day review, anyone calls release()') and the brief ('expose the full seven-day refund review before release'). No ETH is lost and the targets were public during the mint, so this is a weakened guarantee rather than a theft path.

Minimal fix that preserves the design: in release(), also require block.timestamp >= soldOutAt + TARGET_REVIEW_PERIOD, and make refundsOpen() return true while block.timestamp < soldOutAt + TARGET_REVIEW_PERIOD, so every sellout is followed by at least one full review of the current targets. This edge is not covered by the existing test suite (testSelloutLocksRefundsAndRelease sets targets after sellout).

Documented for the adapter and the panel, not as a defect: the brief explicitly accepts that the owner names the three release destinations after deployment.

Powers that follow from the code as written: (a) the owner may call setLaunchTargets any number of times before release, each call restarting the 7-day review, so the owner can postpone release() indefinitely (holders keep their refund exit throughout, and the 90-day fallback also keeps refunds open); (b) the code-size check only proves a destination has code at call time, so a proxy or self-modifying target can change behaviour after the review ends; (c) Ownable.transferOwnership (single-step, OZ 5.1) is not overridden, so the owner can hand these powers to another address at any time, which the brief's 'only set launch targets and renounce' wording does not mention; (d) the owner cannot withdraw, pause, rescue, change metadata or upgrade, which was confirmed by reading every external function.

The constructor takes the owner as an argument and makes no external call, so the empty-chain rehearsal passes; the manifest must carry the static project wallet 0xA7e99BB7155D7477E0C838E201b16E62B9c0b5Ac, not msg.sender.

Read in full: src/GoblinNFT.sol (294 lines) and src/GoblinArt.sol (235 lines), plus the vendored OpenZeppelin 5.1 ERC721, Ownable, ReentrancyGuard, Base64 and Strings they inherit or use, README.md, report.md, and the existing tests test/GoblinNFT.t.sol, test/GoblinNFTV2.t.sol, test/GoblinNFT.invariant.t.sol and test/GoblinEscrow.invariant.t.sol (27 tests, all pass on this commit under the repository foundry.toml).

Checks performed: every external/public state-changing entry point enumerated (mint, refund, reveal, setLaunchTargets, renounceOwnership, release, claimRelease, depositRevenue, claimRevenue, inherited ERC721 transfer/approval functions); ETH conservation (balance == liveSupply*PRICE + totalRevenueDeposited - totalRevenueClaimed before release, and polOwed+reserveOwed+vrfOwed + revenue after) traced through every path including refund-then-remint before sellout and refunds during review; reentrancy (all ETH sends are after effects and under one shared nonReentrant guard; OZ 5 ERC721 _mint/_burn have no hooks); rounding (whole-wei per-token accumulator, remainder retained, no path gifts dust); access control (only setLaunchTargets and renounceOwnership are owner-gated); constructor (one address argument, no external call, reverts on zero owner); compiled runtime 20,352 bytes under EIP-170 with no DELEGATECALL, CALLCODE or SELFDESTRUCT opcodes, scanned with the same loop as the protected harness; tokenURI costs about 0.56M gas per call, well within eth_call limits.

Not reviewed, by the assignment's scope: BagGacha, GenesisVault, Curator, TwapOracle, POLManager, OracleAttestation and TickMath.

Not run: Slither/Mythril (not installed) and the fork tests (no network RPC used). No critical, high or medium defect was found in GoblinNFT or GoblinArt.