The deliverable is complete and committed. All checks pass locally.

What was built

• src/IDMToken.sol is a fixed-supply ERC-20 named idm with symbol IDM and 18 decimals. The constructor takes no arguments and mints the full supply once to the deployer, which is the factory at launch.
• The contract has no owner, no mint, no pause, no blacklist, no tax and no burn-on-transfer. ERC-2612 permit is included for signature approvals. All OpenZeppelin code it uses is internal, so the bytecode has no link placeholders.
• script/DeployIDMToken.s.sol is a local deploy script whose deploy() function tests call directly with no environment reads.
• README.md documents the design assumptions, the manifest values for review, the empty "After launch" section, and operational responsibilities. It states that the production launch is done by IMD's deployer through the factory, not by this script.

Configuration

• foundry.toml pins solc = "0.8.26", evm_version = "cancun", optimizer on, and bytecode_hash = "none". ffi is off and there are no filesystem permissions.
• forge-std v1.9.7 and OpenZeppelin Contracts v5.4.0 are vendored under lib/ as plain files. No submodule, and the project builds offline.

Checks run

Check	Result
forge build from clean	pass
forge test with the verifier's fuzz seed	29 passed, 0 failed
forge fmt --check	pass

The tests cover metadata, the one-time mint to the deployer, CREATE2 deployment from a factory stand-in, the launch flows arriving whole, transfer and allowance success and failure cases, permit success, replay, expiry and wrong-signer rejection, the protected test's admin and privileged call lists, an opcode scan for DELEGATECALL, CALLCODE and SELFDESTRUCT, and three fuzz tests.

Open items for the launch

• Slither and Mythril were not available here, so only the Foundry toolchain ran. The README says so.
• The manifest step owns launch.json. The README lists the values it should carry but none were written to the tree.

Created launch.json matching IDMToken, its constructor and exact supply, with the required pool and economics values.

forge build succeeded. All 29 tests passed with the supplied fuzz seed. Only launch.json is changed for submission.

The review is complete and the findings file is written. No defects were found in the assigned area.

What was reviewed. The token at src/IDMToken.sol is a 30-line fixed-supply ERC-20 that inherits OpenZeppelin's ERC20 and ERC20Permit and mints the whole supply to the deployer in its constructor. It has no custom arithmetic, no external calls, no payable path and no privileged function, so the Math Precision, Boundary and Numerical Gap checks reduce to the inlined library math and the supply constant.

What I verified.

• The vendored OpenZeppelin tree is byte-identical to upstream v5.4.0 and forge-std to v1.9.7, checked with a recursive diff against the GitHub tag tarballs. The inlined transfer, allowance, permit, EIP-712 and ECDSA code is therefore the audited library, not a modified copy.
• The supply constant is an exact compile-time value equal to the manifest's total supply, and it divides evenly by 10,000, so the 10/50/40 launch split leaves no dust. The aderyn large-literal lead is not a defect.
• Scratch tests exercised every edge the guides name: transfer of max uint and of exact balance, 1-wei and zero transfers, self-transfer, allowance of max versus max minus one, exactly spent allowance, allowance above balance, transfers to the zero address, permit at deadline equal to now, max deadline and value, high-s and bad-v signatures, wrong nonce, zero owner and spender, and domain separator change on chain id change. A fuzz test confirmed the sum of balances always equals the total supply. All behaved as the standard intends.
• Ether and unknown selectors are rejected, and the existing 29 project tests pass.

Output. .imd-findings.json holds an empty findings list and nine coverage rows: one for each of the four entry points, all marked holds with the traced reason, plus rows for the supply and launch-split invariants, the external-boundary surface, the vendored dependencies and the static-analysis lead. The scratch tests were removed, and the working tree is clean.

The review is complete and .imd-findings.json holds the result.

Outcome: no defects found in the token. The code is OpenZeppelin v5.4.0 ERC20 plus ERC20Permit with a constructor that mints 1e27 to the deployer, and every path I traced behaves as intended. The findings list carries one informational note only, and the coverage record answers all four listed entry points plus the constructor and six invariants, every one holds.

What I checked, in the order of the three assigned guides:

• Execution Trace. Traced approve, transfer, transferFrom and permit from entry to final state. No fee or burn diverges the amount passed downstream, no sentinel path skips validation, no partial state update exists. Permit consumes the nonce only on success, so a malleated or wrong-chain signature cannot grief the real one.
• Periphery. Hashed all 18 vendored OpenZeppelin files the token compiles against and compared them with the upstream v5.4.0 tag. All identical, so no tampered library hides a defect. The deploy script is local-only and does what it says.
• First Principles. Tested the implicit assumptions with a scratch Foundry suite: high-s signature rejected, zero-owner signature rejected, domain bound to chain and contract, deadline inclusive, permit never touches balances, approve overwrites rather than accumulates, no receive or fallback, runtime 3,833 bytes with no DELEGATECALL, CALLCODE or SELFDESTRUCT. All ten probes passed, and I removed the scratch directory afterwards.

Leads dismissed. The aderyn large-literal line is exactly 1e27 and matches the README manifest supply. Slither reported nothing.

Informational note recorded. Tokens sent to the token's own address are stuck forever because there is no owner or rescue function. That is ordinary ERC-20 behaviour consistent with the README's own burn-to-dead-address statement, so I marked it info and said no code change is needed.

Outside the code. The paired-currency address the README names resolves on chain 4663 to a live contract with symbol IMD and 18 decimals. No launch.json exists in the tree yet, which is expected before the manifest step. The existing 29 tests pass and forge fmt --check is clean. No file in the repository was modified.

The review is complete and the findings file is written. The git working tree shows no modified tracked files, and the scratch test directory is removed.

Outcome: no defects in the permission model. The findings file holds one informational note and eight coverage rows, all four verifier-listed entry points answered.

What I checked, against the Access Control, Trust Gap and Asymmetry guides:

• Permission map. The token inherits only OpenZeppelin ERC20 and ERC20Permit. It has no owner, role, modifier, initializer, proxy, receive or fallback. Storage holds only balances, allowances, name, symbol and nonces. The ABI exposes no mint, burn, pause, blacklist, upgrade or setter selector, so supply cannot grow and no caller can move or freeze another holder's balance.
• Constructor. It mints the full 1e27 supply once to the deployer, which under the launch is the factory. The protected floor's own harness confirms that path.
• Paired surfaces. approve and permit both write the same allowance slot and emit Approval. transfer and transferFrom share one internal path, with transferFrom spending allowance first. Infinite allowance is not decremented, as documented. mint and burn have no external reach.
• Trust gap seams. There is no privileged actor and no pricing formula inside the token, so none of the access-times-economics seams exist. The remaining trust assumptions sit outside this code: the factory holds the supply during launch, and the requester's remainder wallet receives forty percent.
• Library integrity. Every non-mock file in the vendored OpenZeppelin tree is byte-identical to the published v5.4.0 package, and the token imports no mock. The vendored forge-std matches the v1.9.7 release. The project's 29 tests pass.

The one note, severity info. permit can be submitted by anyone holding the owner's signature. A front-runner cannot change the spender or amount, but it consumes the nonce, so the owner's own identical transaction then reverts. This is inherent ERC-2612 behaviour and needs no change to the token. I recorded it with a concrete reproduction so the judge has the only caller-class asymmetry on file.

Static analysis leads. Slither reported nothing. Aderyn's large-numeric-literal note is the supply constant and is not a defect.

Not reached. Nothing within the assigned area was left unexamined. The deploy script's broadcast path was read but is local-only and not part of the launched artifact.

The review is complete. The findings file is written and the working tree is otherwise untouched.

Outcome: no defect in the Economic Security, Invariant or Flow Gap area. The token is OpenZeppelin v5.4.0 ERC20 plus ERC20Permit with a fixed-supply constructor and no overrides. The findings record holds one info-level note and nine coverage rows.

What I verified

• All nineteen vendored OpenZeppelin files compiled into the token are byte-identical to the upstream v5.4.0 release tarball, so there is no tampered dependency.
• The constructor mints exactly 1e27 minor units to the caller and makes no external call. A CREATE2 deployment from a factory stand-in lands the whole supply at the factory, matching the manifest supply and 18 decimals.
• A stateful Foundry invariant over random sequences of transfer, approve, transferFrom and permit across seven actors never broke the sum-of-balances equals totalSupply conservation law.
• Launch hops to the distributor, a claimant, the pool manager and the remainder address each arrive whole, and a max-allowance pull of the entire supply leaves no dust.
• Permit is nonce-, deadline-, chain- and contract-bound. Malleated high-s signatures, a zero owner and cross-chain replay are rejected. The deadline is inclusive as the standard requires.
• The ABI exposes no owner, mint, pause, blacklist or burn surface. The runtime has no DELEGATECALL, CALLCODE or SELFDESTRUCT, and ether is rejected.
• Static analysis's one lead, the large numeric literal, is the supply constant and is not a defect.

The one note reported (info)

Anyone may relay a permit. A signed permit submitted first by a third party sets the allowance exactly as signed and advances the nonce, so a later atomic bundle of permit plus transferFrom from the signer reverts. No value moves and nothing is lost. This is inherent to ERC-2612 and needs no change in the token. I recorded it because it is the only reproducible economic interaction integrators should know about.

Coverage

All four entry points have rows. approve, transfer and transferFrom hold. permit points to the info note. Five further rows record the invariants checked. Nothing in my area was left unreached. The scratch test used for the invariant and edge cases was removed since no critical or high finding required a proof file.

I added two test files. All 55 tests pass under forge test with the verifier's fuzz seed, and I found no defect in the token, so I didn't write .imd-findings.json.

The token (src/IDMToken.sol) is a plain OpenZeppelin 5.4 ERC-20 with signature approvals (permit). It has no owner, mint, pause, blacklist or transfer tax, and mints exactly 1,000,000,000 × 10¹⁸ to the deployer. I kept the existing tests as they were.

test/IDMToken.edge.t.sol — 25 tests for edge cases and failure paths:

• Balances: sending the whole supply, then 1 wei more; going 1 wei over a balance; sending to the token's own address; sending to address(0); spending from address(0).
• Allowances: spending an allowance twice; spending your own balance via transferFrom without an allowance; a new approval replacing the old one instead of adding to it; an unlimited allowance still being capped by the balance; a failed transferFrom leaving the allowance untouched.
• Signature approvals: a signature at exactly its deadline and one second past it; changing the amount, spender or nonce after signing; a flipped (high-S) signature; a garbage signature; a forged signature for owner address(0); a zero spender, with no nonce used up; replaying on another chain.
• Unknown functions: calls like burn and unknown selectors are rejected.
• Fuzz tests (1,000 runs each): balances add up after a transfer between holders; going over an allowance reverts and changes nothing; a signed approval can set any amount; a signature from the wrong key never approves.

test/IDMToken.invariant.t.sol — random call sequences (256 runs × 64 calls). A handler drives five keyed accounts plus the token's own address through transfer, approve, transferFrom, signed approval and time jumps. It also makes calls that must revert and checks they do. A separate record of balances, allowances and nonces is kept alongside, and after every call these must hold:

• the supply never changes;
• all balances add up to the supply;
• every balance, allowance and nonce matches the separate record;
• the token never holds ETH.

My first run showed 2 reverts. They came from an overflow in my own test helper when an allowance was near the maximum value, not from the token; I fixed the helper, and the rerun had 0 reverts.

Not committed: git has no author identity set on this machine, so the commit failed. I didn't change the git configuration, which is outside my allowed paths. The two files are staged and ready; the upload step or the requester needs to commit them.

Some untracked entries appeared in the repo root (.bashrc, .gitmodules, .claude/…). They are sandbox placeholders that point at /dev/null, not files I created, so I left them alone. They must not be committed — the .gitmodules one in particular.

Review complete. The findings file is written and the working tree is otherwise untouched.

Outcome: no defects. The token is OpenZeppelin v5.4.0 ERC20 plus ERC20Permit with nothing overridden, a parameterless constructor that mints 1e27 to msg.sender, and no privileged entry point. I kept two info notes from the specialists and dropped nothing else.

What I verified

• Every vendored OpenZeppelin file the token compiles hashes identically to the upstream v5.4.0 release, so the inherited logic is the audited one.
• A CREATE2 deployment from a factory contract mints the whole supply to the factory, and the factory to distributor to claimant flow moves exact amounts. Name, symbol, decimals and supply match launch.json.
• Creation and runtime bytecode are far under the size limits, and the runtime holds no DELEGATECALL, CALLCODE or SELFDESTRUCT.
• The project's own 55 tests pass, including the invariant suite. The protected tests could not run here because they need the verifier's v4-core harness, which the coverage record states.

Findings kept, both info

1. permit can be relayed by anyone, so a front-run consumes the nonce and makes the signer's own identical submission revert. The two specialist reports on this were the same root cause and are merged. Allowance is set exactly as signed and nothing moves.
2. Tokens sent to the token's own address are stuck, since there is no owner or rescue path by design.

The aderyn large-literal lead is a correctly underscored 1e27 and was dropped. The coverage record answers all four entry points plus four invariant rows.