The Squeek (SQK) token is implemented, tested and documented as a Foundry project at the repository root. All checks pass.

What was built

• src/SqueekToken.sol: a fixed-supply ERC-20 on OpenZeppelin v5.2.0. The constructor takes no arguments and mints 1,000,000,000 SQK with 18 decimals once to the deployer, which at launch is the factory. There is no owner, mint, pause, blocklist, fee or upgrade path.
• test/SqueekToken.t.sol: 27 tests covering metadata, supply, exact transfers, allowance paths, every revert case, CREATE2 deployment from a contract deployer, absence of privileged selectors, and a runtime scan for DELEGATECALL, CALLCODE and SELFDESTRUCT. Four fuzz tests check supply conservation and allowance limits. Tests read no environment variables.
• foundry.toml pins solc 0.8.26 and sets bytecode_hash = "none", with ffi off and no filesystem permissions.
• README.md documents the parameters, assumptions, deployment settings, the empty "After launch" section, and operational responsibilities.
• Dependencies are vendored as plain files under lib/forge-std and lib/openzeppelin. No submodules.

Check results

Check	Result
forge build	passes
forge test with the verifier's fuzz seed	27 passed, 0 failed
forge test with random seeds	27 passed
forge fmt --check	clean

One thing to note

The sandbox bind-mounts every .gitmodules path read-only, so the nested one left by cloning OpenZeppelin could not be deleted. I copied the needed sources into a clean lib/openzeppelin directory and gitignored the now-empty lib/openzeppelin-contracts stub. The root .gitmodules and .claude/launch.json are harness-owned device nodes and were not touched.

I've written launch.json for the Squeek (SQK) launch. forge build succeeds, and forge test with the given fuzz seed passes all 27 of the repo's tests. I couldn't run the two protected check files: they need Uniswap v4-core and launch contracts that aren't in this tree, so they'll first run in the verifier.

What the manifest says, based on the accepted tree (src/SqueekToken.sol, the only contract in it):

• Token: contract SqueekToken, name "Squeek", symbol "SQK", 18 decimals.
• Constructor arguments: none ([]), because the constructor takes no parameters.
• totalSupply: "1000000000000000000000000000", which is what the constructor mints to msg.sender (1,000,000,000 × 10^18).
• Application contracts: none, since the tree has none.
• Pool: paired with IMD at 0xd34a99bc0f67ae1bbd63c660e6d0b0dd03e263b7, fee 12500, tick spacing 60, initial price 79228162514264337593543950336 (one to one).
• Economics: copied exactly from the brief.
• Notes: 554 characters describing the fixed-supply ERC-20, which has no owner, no further minting and no transfer fee or burn.

launch.json is the only change in the working tree.

The review is complete. The findings file holds an empty findings list and nine coverage rows, and the working tree is clean apart from that file.

Result: no defects found in the Economic Security, Invariant or Flow Gap areas. Every entry point and every invariant I checked holds with a concrete trace.

What I verified:

• Entry points. approve, transfer and transferFrom are OpenZeppelin 5.2.0 ERC20 unmodified. Exact amounts move, zero addresses revert, overspend and over-allowance revert, the max-uint allowance is not decremented, and no residual allowance remains.
• Supply and conservation. The constructor is the only supply write, and mint and burn are never exposed. A stateful invariant run over random transfers, approvals and transferFroms among six actors, including the token's own address, never broke sum-of-balances equals totalSupply equals 1e27.
• Launch flows. The swarm, pool and requester shares of 1e27 at 10, 80 and 10 percent are exact integers and arrive whole, leaving the factory at zero. A pull of the exact amount through transferFrom, as the PoolManager settles, also lands whole.
• Dependency integrity. I diffed the vendored OpenZeppelin tree against the npm 5.2.0 package in a temporary directory outside the repository. The five files in the token's import closure are byte-identical. Other vendored files differ only by formatter whitespace and are not compiled into the token.
• Runtime surface. The compiled ABI has no owner, mint, pause, blocklist, upgrade, receive or fallback. The opcode scan for DELEGATECALL, CALLCODE and SELFDESTRUCT passes.

One observation that is not a defect: the DECIMALS constant and the inherited decimals() function both report 18, but the function is not derived from the constant. There is no failing input today, so it is recorded in the coverage rows rather than as a finding.

Tools that ran: forge build, the project's 27 tests, and my scratch invariant and flow tests, all passing. The scratch test and the temporary download were removed afterwards.

The review is complete. The findings file holds an empty findings list and eight coverage rows, the scratch test is removed, and the working tree shows no other changes.

Result: no defects found in the Squeek (SQK) token. The findings list in .imd-findings.json is empty, and all three entry points are recorded as holds.

What I checked, per the assigned guides

• Access Control. The permission model has no roles, modifiers, owner, initializer, receive or fallback. The compiled ABI exposes exactly three state-changing functions. Each storage variable has consistent guards across its writers: a balance is debited only by its holder or by a spender with sufficient allowance, and an allowance row is written only by its owner or decremented by its spender. There is no proxy, delegatecall or escalation path.
• Asymmetry. I diffed transfer against transferFrom, approve against the allowance spend, and mint against burn. The one real asymmetry is that transferFrom can be handed a zero-address sender while transfer cannot. Both the value-zero and value-positive cases revert and change no state. Burn is unreachable because a zero receiver reverts. The constant DECIMALS and the inherited decimals function are two uncoupled sources of truth, but they agree at 18, so there is no failing input on this code.
• Trust Gap. The only trust assumption is that the deployer holds the whole supply at construction, which is the factory by design. The launch flows to the distributor, pool manager and requester are plain transfers that sum exactly to the supply, and the factory holds nothing afterwards. No actor can extract value through an asymmetric formula because there is none.

Evidence beyond reading

• The vendored OpenZeppelin ERC20, Context and interface files are byte-identical to the upstream v5.2.0 tag, so no backdoor hides in inherited code.
• The repository's own 27 tests pass, including the runtime opcode scan for DELEGATECALL, CALLCODE and SELFDESTRUCT.
• I ran eight scratch probes covering zero-address sender, self-spend, no-allowance debit by the factory, the no-burn path, launch-flow conservation, allowance row isolation, decimals agreement, and fuzzed three-party supply conservation. All passed, and the scratch directory is deleted.

Static analysis leads. Slither reported nothing. The aderyn large-numeric-literal note on line 27 is a compile-time constant equal to one billion times ten to the eighteenth, which the tests confirm, so it is not a defect.

Not reached. The protected launch test depends on Uniswap v4 and launch helper sources that are not in this tree, so I could not execute it. Its token-side expectations, namely exact arrival of the swarm share, no privileged mover, no supply growth and matching decimals, are each covered by the probes and repo tests above.

The review is complete. The findings file holds an empty findings list and eight coverage rows, and the tree is otherwise unchanged (git status is clean, the findings file is ignored by .gitignore).

Result: no defects found in the Math Precision, Boundary or Numerical Gap area. The token in src/SqueekToken.sol is a 33-line wrapper over OpenZeppelin ERC20 with a single arithmetic expression, the supply constant, and no custom transfer logic.

What I verified:

• Supply constant. The expression evaluates at compile time to exactly 10^27, far below uint256, below int128 so Uniswap v4 balance deltas fit, and divisible by 10,000 so the 10/80/10 basis-point split leaves no dust. Aderyn's "large numeric literal" lead is style only.
• Inherited math. The five vendored OpenZeppelin files the token imports hash-match upstream v5.2.0 byte for byte, so the unchecked blocks in _update and _spendAllowance carry their audited bounds. I traced each: balance subtraction is guarded by a checked comparison, the addition is bounded by total supply, and allowance is skipped only at exactly the max value.
• Boundaries. No external calls, payable functions, sentinel branches, bytes decoding, receive or fallback exist. The only edge paths are the zero-address reverts in OpenZeppelin.
• Scratch tests. Thirteen unit probes (max uint, exact balance, one wei, self transfer, from equals to, allowance at max and max minus one, exact consumption, allowance above balance, approve overwrite) and one stateful invariant run over six actors all passed. Conservation of supply never drifted. These lived under test/scratch/ and are removed.

One hardening note, recorded in coverage rather than as a finding because nothing fails today: decimals() returns OpenZeppelin's hard-coded 18 and is not derived from the DECIMALS constant that sizes the supply. They agree now only by coincidence.

Outside my area, the project's own tests, the protected checks' requirements (supply minted to msg.sender, no privileged surface, no DELEGATECALL, CALLCODE or SELFDESTRUCT) and forge fmt --check all pass.

The review is complete. The findings file is written and validated, the scratch directory is removed, and the working tree contains only .imd-findings.json (which git ignores) as my output.

Outcome: the Squeek token holds under the Execution Trace, Periphery and First Principles guides. No critical, high, medium or low defect was found. One informational note is recorded.

What I covered

• Execution trace, within a transaction. All three state-changing entry points trace into OpenZeppelin's _update and _approve with no external call, no stale read and no partial update. Self-transfer of the full balance, zero-address sender and receiver, infinite allowance, and transferFrom on one's own balance all behave as the standard specifies. Sending ETH to any entry point reverts.
• Execution trace, across transactions. The only residual is the standard ERC-20 approve race. The brief asked for a plain token and OpenZeppelin v5 intentionally drops increase/decrease allowance, so it is recorded as an approver trust assumption, not a defect.
• Periphery. I downloaded the upstream OpenZeppelin 5.2.0 package and diffed it against the vendored copy. The five files in the token's compile closure are byte-identical. The other vendored files differ only by formatter whitespace and are not compiled into the token.
• First principles. The constructor mints exactly 1e27 units once to the deployer with no arguments. A scratch test moved the launch shares through a factory contract, a distributor, a claimant, a pool-manager-style puller and the requester. Every leg arrived whole and the supply never changed.
• Entry-point inventory. The ABI has only the three ERC-20 writers plus views. No roles are handed out, there is no receive or fallback, and the project's opcode scan passes.

The one finding (info). The contract declares a DECIMALS constant that sizes the supply, but decimals() is inherited from OpenZeppelin's hard-coded default of 18. Both are 18 today, so nothing fails in the shipped code. The fix is a one-line override returning the constant, so the two cannot drift apart.

Static analysis leads. Slither reported nothing. Aderyn's large-numeric-literal note refers to the supply constant, which is readable and correct, so it was not promoted.

Coverage record. All three listed entry points are marked holds, with six additional invariant rows. Nothing was left unreached.

Done. The full suite builds and passes under the verifier's fuzz seed, formatting is clean, and only the two new files under test/ are added. No defect was found in the token, so no findings file was written.

What I found

The token at src/SqueekToken.sol is a thin wrapper over OpenZeppelin 5.2 ERC20 with the fixed supply minted to the deployer and no other surface. I read it adversarially (zero, one wei, the full supply, the maximum, repeated calls, unexpected callers, unknown selectors, ether) and found nothing wrong to report. The existing suite covered units and stateless fuzz but had no invariant tests over random call sequences, which the acceptance criteria require for a value-holding contract.

What I added

• test/SqueekToken.invariant.t.sol: a handler with six actors that drives transfer, full-balance transfer, transfers to arbitrary stranger addresses, approve, transferFrom, and six expected-failure paths (over balance, to zero, over allowance, over balance with infinite allowance, unapproved self transferFrom, privileged selectors, ether). Expected reverts are caught and checked for the exact ERC-6093 error and for untouched state, so the suite runs with fail-on-revert on. Ghost ledgers record per-address flows and allowances. Invariants: supply never changes, sum of all holder balances equals supply, each balance matches the ghost ledger, nobody sends more than received, allowances match the ledger, and the token holds no ether with fixed metadata.
• test/SqueekToken.launch.t.sol: the launch flow in one transaction through a factory stand-in (deploy by CREATE2, then distributor, pool and requester shares arriving whole), distributor claims summing exactly to the swarm share, deterministic runtime across deployments, and the ERC-20 edges the unit suite left open: approve overwrites rather than accumulates, revocation blocks the spender, max-minus-one allowance is finite, transferFrom on your own balance needs a self-approval, transferFrom from or to the zero address, exact balance and allowance boundaries, unknown selectors and short calldata revert, and any deployer receives the whole supply.

Verification

Check	Result
forge build	ok
forge test with the verifier seed	53 passed, 0 failed across 3 suites
forge fmt --check on test/	clean
Handler against a fee-on-transfer mutant in scratch	failed on the first taxed transfer, as it should

The mutant check was done in test/scratch/, which I removed afterwards. Nothing outside test/ was touched.

The review is complete and the findings file is written. Nothing else is pending.

Outcome: the token is clean. The single specialist finding reproduces exactly as stated and stays at informational severity. No new defects were found.

What I checked

• The contract in src/SqueekToken.sol is a 33-line wrapper over the vendored OpenZeppelin v5.2.0 ERC20. I read the vendored ERC20 and Context sources in full. They match upstream: no overrides of transfer, update, or allowance logic.
• I wrote a scratch Foundry test against the three entry points and the constructor. It covered exact transfer amounts, zero-address reverts, insufficient balance, finite and infinite allowance handling, the self-approval path, and probes for mint, burn, pause and ownership selectors. All four tests passed, so each entry point holds. The scratch directory was removed afterward.
• The project's own 53 tests pass. Creation code is 3,327 bytes and runtime 2,164 bytes, well under the factory limits, and the constructor takes no arguments, so CREATE2 deployment from the factory is unobstructed.
• The manifest in launch.json uses schema keys only, states the supply the constructor mints, has empty constructor arguments matching the zero-parameter constructor, and keeps addresses lowercase.

Finding kept (info)

• The audit_flow finding: the DECIMALS constant sizes the supply, but decimals() is never overridden, so it returns OpenZeppelin's hard-coded 18. Both are 18 today, so there is no failing input and no funds impact. The reproduction in the file shows the divergence path if the constant is edited. The aderyn large-literal lead points at the same line and is not a defect, so it was folded into this note rather than reported separately.

Coverage record: all three listed entry points marked holds, plus rows for the constructor, the no-mint and no-privilege invariant, and the manifest check. The file .imd-findings.json holds one finding and six coverage rows. No repository files were changed.