The HAMSTER token project is complete, verified and committed.

What was built

• src/HamsterToken.sol: contract HamsterToken, a thin wrapper over OpenZeppelin v5.4.0 ERC20. Name and symbol are HAMSTER, decimals 18. The constructor takes no arguments and mints the whole 1,000,000,000 token supply once to msg.sender, so on the launch the factory receives it. There is no owner, mint, pause, blacklist, fee or burn hook, and no receive or fallback.
• foundry.toml pins solc 0.8.26 with bytecode_hash = "none" and cbor_metadata = false, ffi off, no filesystem permissions.
• lib/ vendors forge-std v1.11.0 and the OpenZeppelin ERC20 subset as ordinary files with licences. No submodules.
• script/DeployHamsterToken.s.sol is a reference script whose deploy() function is tested directly and reads no environment.
• README.md documents behaviour, assumptions, the launch parameters, manifest values, "After launch" (nothing to configure), and operational responsibilities.

Verification

Check	Result
forge build	Compiler run successful
forge test with the verifier's fuzz seed	29 passed, 0 failed
forge test with an empty environment	29 passed, 0 failed
forge fmt --check	Clean
Bytecode link placeholders	None

The tests mirror the protected floor locally: CREATE2 deployment from a factory probe leaves the whole supply with the factory, common mint and admin selectors revert for both a stranger and the deployer, nobody can pull a holder's balance without allowance, the runtime has no DELEGATECALL, CALLCODE or SELFDESTRUCT, and fuzz tests cover supply conservation, balance and allowance reverts. One fuzz test initially failed on the zero address as sender, where OpenZeppelin reverts with ERC20InvalidSender first. I excluded that input since it is not a reachable caller.

Open items for the launch team, not this task

• The manifest step fills token.totalSupply with 1000000000000000000000000000, decimals 18 and empty constructor arguments.
• Etherscan verification after deployment belongs to the deployer.
• No independent adversarial review has been done. The contract adds no logic over OpenZeppelin's ERC20, but tests passing are not an audit.

Created launch.json matching HamsterToken, its constructor, exact supply, and required pool and economics values.

forge build succeeded. All 29 tests passed with the supplied fuzz seed. Only launch.json changed outside permitted scratch files.

The review is complete. The findings file is written and validates as JSON, and the working tree is clean apart from it.

Outcome: no defects found in the assigned area. The HAMSTER token is a 41-line subclass of OpenZeppelin's ERC20 that mints the full supply once in its constructor and adds nothing else. There is no owner, initializer, mint, burn, pause, blacklist, hook, receive or fallback to audit for permission gaps.

What I verified

• Access control. The compiled method table exposes only approve, transfer and transferFrom as state-changing entry points, plus views. Unknown selectors, empty calldata and ETH transfers all revert.
• Vendored base library. All five OpenZeppelin files under lib hash byte-for-byte to the upstream v5.4.0 tag, so there is no hidden backdoor in the inherited transfer or allowance logic. The sender context is plain msg.sender with no trusted-forwarder path.
• Asymmetry. Compared transfer against transferFrom and approve against the pull path. The zero-address sender, self-pull without allowance, zero receiver and infinite-allowance edges all revert or behave as OpenZeppelin v5 intends, and a revert leaves allowances intact.
• Trust gap. No privileged actor exists, so there is no seam where authorization interacts with economics or caller class. Every launch flow moves exactly the requested amount for every caller, which is what the protected floor test requires.
• Supply. The supply constant evaluates to exactly 1e27 under the solc 0.7+ rule that a literal base with a variable exponent is computed as uint256, and the only mint path is the constructor.

Tests run

Suite	Result
Project tests (29)	all pass
Scratch edge-case tests I wrote (6)	all pass, then deleted

The findings file records nine coverage rows: one for each of the three listed entry points, five invariants, and the reference deploy script, all marked as holding. The approve/transferFrom allowance race is noted as standard ERC-20 behaviour rather than a defect.

The math review of HAMSTER is complete and found no defects. The findings file at .imd-findings.json holds an empty findings list and nine coverage rows, all holds.

What was checked, against the Math Precision, Boundary and Numerical Gap guides

• The token's only arithmetic is the constant supply expression in src/HamsterToken.sol:24. The literal base makes the exponentiation evaluate in uint256, so no uint8 wrap. The runtime value is exactly 1e27 and matches the manifest supply and 18 decimals.
• Inherited arithmetic is OpenZeppelin v5.4.0 ERC20. All five vendored files are byte-identical to the upstream tag, so the unchecked subtract and add in _update rest on a fixed 1e27 supply and cannot wrap.
• Boundary inputs were executed in a scratch Foundry suite. 1 wei, balance minus one, exact balance, balance plus one and max uint all revert or succeed with the exact ERC-6093 operands. Whole-balance self-transfer, zero-value transfers, and zero-value transferFrom with zero allowance behave to spec.
• Allowance edges: max uint is infinite and not decremented, max minus one is finite and decremented by exactly the spent value, and an allowance equal to the value spends to zero.
• Supply conservation held under an eight-holder fuzz with halving transfers and a self-transfer, 256 runs.
• No boundary surface: no external calls, no payable, receive or fallback, no bytes decoding. Ether and unknown selectors revert.
• Static-analysis lead on the large numeric literal at line 22 is a compile-time constant with digit separators, not a defect.

Coverage: all three listed entry points (approve, transfer, transferFrom) are recorded as holds, plus rows for the constructor constant, the supply invariant, the decimals-to-manifest match, the boundary surface, the aderyn lead and the vendored dependency. The ABI exposes no other state-changing function.

The scratch tests were removed after running, and the project's own 29 tests pass. The working tree is unchanged except for the findings file.

The review is complete. I found no defects in the economics, invariant or flow-gap areas, and .imd-findings.json holds an empty findings list with seven coverage rows.

What I checked

• Vendored library integrity. All five OpenZeppelin files under lib/ are byte-identical to the upstream v5.4.0 tag, so the token is a genuine unmodified ERC-20 with a constructor-only mint.
• Entry points. The compiled ABI exposes exactly approve, transfer and transferFrom as state-changing, with no receive, fallback, mint, burn, owner, pause or upgrade path. All three rows are holds.
• Conservation invariant. A stateful invariant run of 256 random sequences of transfers, approvals and delegated transfers among seven actors kept the sum of balances equal to the fixed supply of 1e27 minor units.
• Launch flows. A CREATE2 factory probe received the whole supply, paid the ten percent to a distributor, which paid a claimant whole. A balance-delta settle probe standing in for the v4 PoolManager received the seed exactly and a buy and sell moved exact amounts both ways.
• Economic surface. The token has no external dependency, oracle, callback, fee or sentinel-address branch, so there is no path for value extraction against the contract itself. The standard ERC-20 approve race is present but is what a plain ERC-20 brief asks for, so it is not reported as a defect.
• Existing suite. All 29 project tests pass with the verifier's fuzz seed, and the committed sources pass the format check.

Limits. The live protected floor test depends on Uniswap v4-core, which is not vendored here, so the pool seed and swap were verified against a balance-delta probe rather than the real PoolManager. The scratch tests were removed after running, and no repository file was changed.

The review is complete and .imd-findings.json is written with 1 finding and 8 coverage rows, including all three required entry points.

Token verdict: no defects in src/HamsterToken.sol. It is an unmodified OpenZeppelin v5.4.0 ERC20 with the full 1e27 supply minted once to msg.sender in a zero-argument constructor. The compiled ABI exposes exactly approve, transfer and transferFrom as state-changing functions, with no mint, admin, pause, blacklist or upgrade path, and decimals/name/symbol match the job.

• All 29 tests pass at the configured 256 fuzz runs with the documented seed.
• The five vendored OpenZeppelin files are byte-identical to the upstream v5.4.0 tag.
• Slither reported nothing; the aderyn large-literal lead on line 22 is the requested supply constant, not a defect.
• Runtime is 2,175 bytes, and the runtime contains no DELEGATECALL, CALLCODE or SELFDESTRUCT.

One low-severity defect, in the test suite only: test/HamsterToken.t.sol:302. testFuzz_transferConservesSupply excludes address(0) but not deployer. When to == deployer, the transfer is a self-transfer and balanceOf(to) + balanceOf(deployer) counts the same 1e27 balance twice. The token is correct in that case (totalSupply and the balance both remain 1e27); the assertion is wrong.

Reproduction: on a clean cache, FOUNDRY_FUZZ_SEED=0x45a2fcb4…d92 forge test --match-test testFuzz_transferConservesSupply --fuzz-runs 20000 fails at run 6739 with to=0xaE0bDc4eEAC5E950B67C6819B118761CaAF61946 (the makeAddr("deployer") address) and amount=5e18, reporting 2e27 != 1e27. Fix by adding vm.assume(to != deployer). This is latent at 256 runs but deterministic at higher run counts and after Foundry replays its persisted failing corpus.

Coverage: all three entry points hold, plus five invariant/deployment/periphery rows. The one thing I could not execute is the protected custom-token floor: it imports LaunchLiquidity, PoolInitializationGuard and v4-core, and needs IMD_* environment values absent from this repository. I checked its requirements statically against the token, and the plain-transfer design satisfies all of them. No source, config or library file was modified.

Added failure-path, boundary, fuzz, and stateful invariant tests under test/. Fixed the existing self-transfer property.

Verified offline with the required seed: forge build succeeds; all 53 tests pass, including 32,768 invariant handler calls.

Only test/ changed. No implementation defects found.

The review is complete. The findings file is written with no defects and a full coverage record. No tracked file was changed.

Outcome: the HAMSTER token has no reproducible defect. It is a 41-line wrapper over the unmodified OpenZeppelin v5.4.0 ERC20 whose constructor mints the fixed supply to the deployer, with no owner, mint, pause, blacklist, fee or hook.

The one specialist finding was dropped. The audit_flow report said the fuzz conservation test double-counts the deployer on a self-transfer. That describes the test before commit 70fd523, which added a to == deployer branch and a direct test for that case. On a clean fuzz cache the specialist's exact seed passes, and the token itself was never at fault. The other three specialists and the independent tester reported nothing.

What I verified myself:

• All three state-changing entry points hold. approve, transfer and transferFrom are the stock OpenZeppelin paths, with the expected ERC-6093 reverts, exact amount movement, allowance rollback on balance failure, and no way to pull a holder's balance without approval.
• The five vendored OpenZeppelin files are byte-identical to the upstream v5.4.0 tag.
• The compiled ABI exposes only the standard ERC-20 writes. The runtime has no DELEGATECALL, CALLCODE or SELFDESTRUCT, and both creation and runtime code are far under the size limits.
• The manifest matches the code: empty constructor arguments, the stated supply, 18 decimals, lowercase addresses, a 12-character contract name.
• The full suite of 53 tests passes, including a fail-on-revert invariant campaign.

The aderyn large-numeric-literal note is a style remark about the supply constant, not a defect. The README still says the repository contains no manifest, which was true when written and before the manifest merge added launch.json. That is stale prose, not a code or deployment issue.