Implemented Squeek.sol: 1,000,000,000 SQK, 18 decimals, minted once to the deployer. No administrative powers or further minting.

Dependencies are vendored; assumptions, deployment parameters, and operational responsibilities are documented.

Validation passed with Solidity 0.8.26:

• Offline build.
• All 33 Foundry tests, using the supplied fuzz seed.
• 16,384 stateful invariant operations.
• forge fmt --check.

Protected launch integration checks remain for the verifier’s infrastructure.

I found no defects in the permissions area (Access Control, Trust Gap and Asymmetry), so .imd-findings.json has an empty findings list and five coverage rows.

What the code is: src/Squeek.sol is one 17-line contract built on OpenZeppelin's ERC-20 (v5.1.0, vendored). Its constructor mints exactly 1,000,000,000 × 10^18 SQK (10^27 base units) to msg.sender, which is the factory in a launch. It adds nothing else: no overrides, no owner or roles, no admin functions, no fees or exemptions. I read the vendored ERC20.sol and Context.sol and they match standard v5.1.0: _msgSender() just returns msg.sender.

Coverage:

• approve(address,uint256) — holds. It only changes the caller's own allowance and rejects the zero address for owner or spender.
• transfer(address,uint256) — holds. It only moves the caller's own balance and reverts on an insufficient balance or a zero recipient. There are no fees, blacklist, pause or exemptions, so the launch transfers to the distributor, the claims and the pool trades all move exactly what they say.
• transferFrom(address,address,uint256) — holds. It checks and reduces the caller's allowance before moving tokens, and an allowance of the maximum uint256 is never reduced. No address, including the deployer or factory, gets around the allowance.
• The supply can't grow — holds. The mint is only reachable from the constructor, and nothing callable later can mint, change an owner or upgrade.
• No privileged role — holds. The constructor gives out no role and every caller is treated the same. So the floor test's admin calls (pause, blacklist, burnFrom, mint and the rest) don't exist on this contract and can't run.

Checks: forge test passes 33 of 33. I didn't run the protected floor tests because they need the launch's environment variables and harness files. Reading them against the contract, nothing in them would fail. The one static-analysis lead, aderyn's "large numeric literal" at src/Squeek.sol:10, is the intended supply constant, not a defect.

I changed no repository files. git status shows untracked editor and shell files (.bashrc, .claude/, .vscode and others) that I didn't create; they come from the workspace setup, not this review.

I found no defects in Squeek's economics. .imd-findings.json holds an empty findings list and a coverage record for all three entry points plus two supply invariants.

What the code is: src/Squeek.sol is a plain OpenZeppelin v5.1.0 ERC-20. Its constructor mints INITIAL_SUPPLY = 1_000_000_000 * 10 ** 18 once to msg.sender (the factory, during a launch). It adds nothing else: no owner, no mint or burn after deployment, no transfer fee, no pause or blacklist, no hooks, and no DELEGATECALL or SELFDESTRUCT. I read the OpenZeppelin files it depends on (_update, _spendAllowance, _approve), and their logic is the standard upstream code. I didn't check them against the archive hash listed in DEPENDENCIES.md.

Economic Security, Invariant and Flow Gap passes:

• Supply stays fixed: the constructor is the only place tokens are minted. With no mint, upgrade or ownership function, the supply can't grow after launch from anyone, including the factory.
• Launch transfers arrive in full: nothing is taxed or burned on transfer. Each step of the launch moves exactly the amount sent: factory to distributor, distributor to claimant, the seed into the PoolManager, and buys and sells through it.
• Balances add up: the sum of balances always equals totalSupply. Over-spending a balance or allowance reverts. An allowance set to the maximum value is never used up, which is normal ERC-20 behaviour.
• No privileged power can move or freeze a holder's balance.

Coverage: approve, transfer and transferFrom are marked holds, each with a one-line reason.

Static analysis: aderyn's "large numeric literal" at src/Squeek.sol:10 is the intended supply constant, so it's not a defect. Slither reported nothing.

Checks run: the existing test suite passes, 33 tests across two suites, including the invariant suite. I didn't run the protected launch-floor test. It needs launch environment values that this review doesn't have, though nothing in the token conflicts with what it checks. I didn't review launch.json because the tree doesn't have one yet.

I changed no files apart from writing .imd-findings.json.

Created launch.json matching Squeek, its argument-free constructor, exact supply, and required pool and economics values.

forge build succeeded; all 33 tests passed with the supplied fuzz seed. Only launch.json is changed for submission.

The review is complete and the findings file is written.

Result: no defects found in the math area. The file .imd-findings.json holds an empty findings list and eight coverage rows, all holds.

What the token is. One contract, src/Squeek.sol, which inherits OpenZeppelin ERC20 v5.1.0 unchanged and mints a constant supply to the deployer in its constructor. There is no division, rounding, fee, cast, scale conversion, external call, payable path, or bytes decoding anywhere in the token or its base, so most failure modes in the Math Precision, Boundary and Numerical Gap guides have no surface here.

What I verified, with concrete inputs:

• The supply constant equals 10^27 base units, computed independently with node and asserted in forge. Decimals are the inherited 18.
• Transfers of the full supply, the supply plus one, and the maximum uint256 behave as specified. The last two revert with the insufficient-balance error and leave state untouched.
• Allowance edges: maximum is treated as unlimited, maximum minus one is decremented, an exactly consumed allowance rejects one more unit, and a transferFrom that fails on balance after passing the allowance check rolls the allowance back.
• Sum of balances equals total supply under a 1024-run fuzz and the author's 256-run stateful invariant suite, which ran with every call succeeding.
• The five vendored OpenZeppelin files are byte-identical to the upstream v5.1.0 archive, whose hash matches DEPENDENCIES.md.
• The author's 33 tests build and pass under Solidity 0.8.26.

Static-analysis lead. The aderyn "large numeric literal" line points at the underscored supply constant. Its value is correct, so it is not a defect.

Outside my area. Nothing severe surfaced. There is no owner, mint or privileged path, which also satisfies the protected floor tests I read. No launch.json exists in the tree yet, which is expected at this stage.

The scratch test and the downloaded archive were removed, and the tree is otherwise unchanged.

The review is complete. The findings file is on disk, excluded from git by design, and no tracked file was changed.

Outcome: no defects found in the control-flow area for the Squeek (SQK) token. The file .imd-findings.json holds an empty findings list and eight coverage rows, all holds.

What the token is. A single contract, Squeek, that inherits unmodified OpenZeppelin ERC20 v5.1.0 and mints one billion tokens at 18 decimals to the constructor caller. There is no owner, fee, burn, pause, mint, receive or fallback path.

What I verified for each guide.

• Execution Trace. Traced approve, transfer and transferFrom from entry to final storage write. The amount checked against the allowance is the same amount moved. Zero-address paths revert with the ERC-6093 errors. A failed transfer rolls back the allowance decrement atomically. Self-transfer leaves the balance unchanged. Infinite allowance is not decremented. A scratch Foundry test confirmed each of these, then was removed.
• Periphery. All five vendored OpenZeppelin files are byte-identical to the upstream v5.1.0 tag. The inheritance chain contains no assembly, encoders, loops, oracles or external calls.
• First Principles. The supply constant evaluates to exactly 10^27 and matches the README's manifest string. The mint goes to the immediate deployer, which is the factory under a CREATE2 launch, and not to the transaction origin. The compiled ABI exposes only the three listed nonpayable functions plus the constructor, so supply can never grow and no privileged hand can move or freeze a holder.

Protected floor. A disassembly of the runtime bytecode contains no CALL-family, DELEGATECALL, CALLCODE or SELFDESTRUCT opcodes. Because the token has no fee, the swarm share, pool seed and swaps move exactly their stated amounts without any exemption list.

Checks run. The project build, all 33 project tests with the assignment's fuzz seed, and the forge format check all pass. The static-analysis lead from aderyn about a large numeric literal is style-only and is recorded as a note in the coverage record.

Not covered. The protected launch test that drives a real Uniswap v4 PoolManager needs the verifier's infrastructure and environment variables, so I reasoned about it from the token's behavior rather than executing it.

Added 16 edge-case and fuzz tests, and expanded the stateful invariants.

Verified offline with the required seed: forge build and forge test pass—48 unit/fuzz tests plus three invariants across 32,768 random calls.

Only test/ changed. No defects reproduced. Protected launch integration requires verifier infrastructure and wasn’t run locally.

The review is complete and the findings file is written.

Outcome: no defects. All five specialist reports came in empty, so there was nothing to reproduce or merge. My own pass under the Pashov, x-ray, Trail of Bits and eth-security checklists found nothing either, and the one static-analysis lead is style only.

What I verified against the code:

• The token at src/Squeek.sol is the vendored OpenZeppelin ERC-20 plus a constructor that mints the fixed supply to the deployer. It adds no other functions, roles, hooks, or external calls.
• Each of the three state-changing entry points (approve, transfer, transferFrom) traced through the inherited implementation behaves as standard ERC-20 with ERC-6093 reverts. Transfers deliver exact amounts, so the factory, distributor and PoolManager flows arrive whole without exemptions.
• The minted supply is one billion tokens at 18 decimals and matches launch.json exactly. The manifest's constructor arguments are empty, matching the no-argument constructor.
• The five vendored OpenZeppelin files are byte-identical to upstream v5.1.0. The build with solc 0.8.26 succeeds and all 49 local tests pass.
• Runtime bytecode is well under the EIP-170 limit and contains no DELEGATECALL, CALLCODE or SELFDESTRUCT. There is no library linking and no proxy.
• The aderyn "large numeric literal" lead at line 10 evaluates to exactly the brief's supply and is not a defect.

Limits: the protected tests import the verifier's launch harness and Uniswap v4 sources, which are not in this tree, so they could not be executed here. I checked every assertion they make (supply, decimals, exact flows, no admin calls, no forbidden opcodes, size) by hand against the token instead.

.imd-findings.json holds an empty findings list and eight coverage rows: the three entry points, each marked holds with its reason, plus five invariant rows. No repository files were changed; the scratch directory I used for the protected-test attempt was removed.