Implemented Squeek (SQK) with 18 decimals and exactly 1,000,000,000 tokens minted once to the deployer. Dependencies are vendored, and deployment assumptions and responsibilities are documented in README.md.

Verified with Solidity 0.8.26:

• forge build passed.
• forge test passed: 35 local tests using the supplied fuzz seed.
• forge fmt --check passed.

I found no permission defects in Squeek, so .imd-findings.json has an empty findings list. It does have a coverage row for each of the three entry points, all marked holds. No other files were changed, and the existing test suite passes (35 tests).

What I checked:

• The contract: src/Squeek.sol is a plain OpenZeppelin v5 ERC20 that changes nothing in the library code. Its constructor mints 1,000,000,000 × 10^18 to the deployer once.
• Access control: there is no owner or role system, and no mint, burn, pause, blacklist or seize function. The constructor hands out no roles, so the factory or deployer holds no special power once deployment ends. After deployment there is no way to mint more.
• Trust gap: a call can only move or freeze a balance through the holder's own transfer, or through transferFrom within an allowance the holder granted. No privileged spender can bypass that.
• Asymmetry: there are no fees, burns or exemptions on transfer. The factory → distributor → claimant flow, pool seeding and swaps through the pool manager all move exactly the amounts they state, as the protected floor test requires.
• Static analysis leads: slither reported nothing. Aderyn's one note (a large numeric literal at src/Squeek.sol:10) is just the 1_000_000_000 * 10 ** 18 supply constant, so it isn't a defect.

ERC20's usual approve race, where a spender front-runs an allowance change, is standard behaviour and the brief asks nothing different, so I didn't report it. I wrote no Foundry proofs, since there were no critical or high findings.

Created launch.json matching Squeek’s constructor, supply, and required pool/economics values.

Validation passed: manifest checks, forge build, and all 35 tests with the supplied fuzz seed. Only launch.json is changed for submission.

The review is complete. No math precision, boundary, or numerical gap defect was found in the Squeek token, and the findings file records an empty list with full coverage.

What was reviewed

• src/Squeek.sol is a 16-line contract: it inherits OpenZeppelin ERC20 v5.0.2 and mints a constant supply to the deployer in the constructor. It adds no arithmetic, no overrides, and no external calls of its own.
• The vendored ERC20 library is unmodified. Its SHA-256 matches the entry in dependencies.lock.json, so the OpenZeppelin arithmetic I traced is the code that ships.
• I traced every value-moving path in the library against the Math Precision, Boundary and Numerical Gap checklists. Every subtraction is guarded by a strict balance or allowance check before its unchecked block, and the unchecked additions are bounded by a total supply of 1e27, which is below 2^90.

What I verified by test

I wrote eleven probes under test/scratch/ and ran them against the current code. All passed, and the project's own 35 tests pass with the pinned fuzz seed. The probes covered transfer of supply, supply plus one and max uint, allowance exactly equal to value, one wei short, max minus one versus max, self transferFrom with allowance, failed transferFrom leaving allowance untouched, and a fuzzed three-party conservation check over 1024 runs. The scratch directory has been removed.

Static analysis lead

Aderyn flagged the supply constant as a large numeric literal. It is a compile-time constant that evaluates exactly to the manifest supply, confirmed by an assertion against the full literal. Not a defect.

Coverage record

All three entry points in .imd-findings.json are marked holds, plus four invariant rows for exact supply, no scale or downcast, no boundary sites, and no invariant-skipping zero paths. Nothing in my area was left unreached. The working tree is clean apart from the gitignored findings file.

Review complete. The findings file is written and validated, and no repository file was changed.

Outcome: the Squeek token holds on every trace in my area. The one substantiated item is informational and lives in the test library's provenance, not in the token.

What I checked, against the Execution Trace, Periphery and First Principles guides:

• Execution trace of all three entry points. Each path through OpenZeppelin v5.0.2 was followed into _update, _approve and _spendAllowance. Sentinel inputs revert, self-transfers preserve balance, an allowance spend rolls back when the later balance check reverts, and max allowance is never decremented. There is no external call anywhere, so no stale read or reentrancy is possible.
• Periphery. All six vendored OpenZeppelin files hash-match the v5.0.2 lock entries, so the inherited base is pristine. An opcode scan of the compiled runtime found no CALL, STATICCALL, DELEGATECALL, CALLCODE, CREATE, SELFDESTRUCT or transient-storage instructions.
• First principles. The supply constant equals 10^27 (the aderyn large-literal lead is correct arithmetic), the constructor takes no arguments and mints to msg.sender, which is the factory under CREATE2, and decimals, name and symbol match the brief. No mint, burn or administrative function exists in the ABI.
• Launch floor. Plain ERC-20 accounting moves exact amounts on the distributor, claim, seed and swap flows the protected test exercises. The existing 35-test suite, including fuzz and invariant runs, passes under the pinned seed.

Finding reported (info): the README at line 65 says the lock file hashes every vendored file and dependencies are unmodified, but six forge-std files in the tree differ from their lock hashes. I fetched the pinned upstream files and confirmed the difference is line-wrapping only, caused by the project's formatter settings. The token is unaffected.

Coverage record: nine rows, three for the listed entry points plus constructor, supply invariant, base library, bytecode, launch flows and dependency provenance. Nothing was left unreached.

The review is complete and .imd-findings.json is written. No tracked file was changed. The scratch test lives under test/scratch/, which is gitignored.

Outcome: no economic, invariant, or flow-gap defect in the Squeek token. The contract is a plain OpenZeppelin v5.0.2 ERC-20 whose constructor mints the full supply once to the creating account. I report one informational provenance discrepancy, outside my area.

What I verified

• Dependency integrity. All five vendored OpenZeppelin files are byte-identical to upstream commit dbb6104c, so the transfer, approval and allowance logic is exactly the audited library code.
• Supply invariant. The compiled ABI exposes only the constructor, three nonpayable functions and seven views. There is no receive, fallback, mint, burn, pause, blacklist or owner path, so total supply is fixed at 1e27 and the sum of balances always equals it. The project's 128x64 invariant runs and my own 1024-run fuzz hold this.
• Launch flows. I wrote a scratch test modelling Uniswap v4 balance-delta accounting. The 10% distributor share arrives whole and 37 unequal claims sum to it exactly. The 80% seed settles exactly, a trader's take and sell-back leave the pool whole, and the remainder reaches the requester exactly. An allowance-based pull also moves the exact amount.
• Economic Security failure modes. No fee-on-transfer, rebasing, blacklist, pause, void-return, callback, oracle or external call exists. Zero-address receiver and spender revert. Full-balance and max-allowance operations behave per the standard. Decimals match the brief.
• Existing suite. All 35 project tests pass with the README's fuzz seed. The aderyn large-literal lead is a compile-time constant asserted equal to 1e27 by the suite, so it is not a defect.

The one finding (info). The README states dependencies are unmodified and the lockfile hashes every vendored file, but six forge-std files differ from both the lockfile and upstream v1.9.6. The diff is formatter line-wrapping only, in test tooling, with no runtime effect. The reproduction is a single sha256sum against lockfile line 26. The fix is either to restore the upstream bytes or to re-hash and amend the README sentence.

Coverage. All three listed entry points are marked holds, with five additional invariant and guide rows. The protected floor tests are marked unreached because they import v4-core and the network's floor harness, which are not in this tree. I traced each of their checks by reading and all hold on this code.

Added 13 edge-case and fuzz tests, and strengthened stateful invariants across five actors.

Verified offline with the supplied seed:

• forge build passed.
• forge test passed: 48 tests and 32,768 invariant calls.
• Only test/ changed.

No confirmed defects found.

Review complete. .imd-findings.json is written with two info findings and a full coverage record.

Outcome: no code defect in the Squeek token. All three entry points hold, and the build, the 48-test suite, and forge fmt --check pass.

Specialist findings:

• The two provenance reports from audit_economics and audit_flow share one root cause and are merged into one info finding. I reproduced it: six forge-std files hash differently from the lockfile, the lockfile values equal the pinned upstream files, and the tree copies differ only in whitespace. All OpenZeppelin files are byte-identical to upstream.
• audit_math, audit_permissions and the test writer reported nothing, which matches my own pass.

Added by my own pass: one info finding. README line 50 says the repository holds no launch.json, but the manifest step committed one at the root. The manifest itself validates against the schema rules and matches the constructor and supply.

Coverage: approve, transfer and transferFrom are traced through the vendored OpenZeppelin v5.0.2 implementation and marked holds, plus three invariant rows covering fixed supply, exact launch flows, and factory deployability (no constructor arguments, bytecode well under both limits, no forbidden opcodes). No critical or high findings, so no proof tests were needed and nothing was written under test/scratch.