Implemented Pepe: name pepe, symbol PEPE, 18 decimals, and exactly 1 billion tokens minted once to the deployer.

Added vendored dependencies, deployment documentation, and success, failure, fuzz, and invariant tests.

Verified with Solidity 0.8.26:

• forge build passes
• forge test: 33 passing
• forge fmt --check passes
• Clean offline verification passes with identical bytecode

Created launch.json matching the accepted Pepe constructor, exact supply, pool settings, and economics.

Validation passed: manifest checks, forge build, and all 33 tests. Only launch.json is changed for submission.

The review is complete. The findings file is valid JSON, the snippet matches the cited line, and the tree is unchanged apart from the ignored test/scratch/ and .imd-findings.json.

Outcome: no math defects in the Pepe token. The assigned area (Math Precision, Boundary, Numerical Gap) is fully covered. One low-severity defect outside the area was substantiated and reported.

What the token is. src/Pepe.sol is a 16-line OpenZeppelin v5.0.2 ERC20 with a single constructor mint of one billion tokens at 18 decimals to the deployer. It has no custom arithmetic, no divisions, no fees, no external calls, no payable path, no admin functions and no fallback.

Math coverage, all holding:

• The supply constant is a compile-time exact value of 1e27, roughly 2^90, far from any overflow boundary. The aderyn large-literal lead is not a defect.
• OpenZeppelin's unchecked subtractions in balance and allowance updates are each guarded by a preceding less-than revert. The unchecked balance addition cannot overflow because the sum of balances equals the fixed total supply forever, since no mint or burn is reachable after construction.
• Edge inputs checked by test: zero, one, full supply, supply plus one, uint256 max, self-transfer, infinite allowance sentinel, max minus one allowance, zero-address source and destination, unknown selectors and ether. All behave as specified.
• Launch flows move value one-to-one, so the swarm share, pool seed and remainder arrive whole.

One finding, low severity. DEPENDENCIES.md tells reviewers to verify vendored files with sha256sum --check lib/checksums.sha256 and states they are unmodified. On the clean committed tree that command fails for seven forge-std files. All OpenZeppelin files verify, so the token bytecode is unaffected. The fix is to regenerate the checksum manifest or re-vendor forge-std from the documented v1.9.7 archive.

Coverage record. Eight rows were written: the three ABI entry points plus the constructor constant, the supply invariant and the two guide areas all marked holds. The launch manifest row is unreached because no launch.json exists yet. When written, it needs totalSupply of exactly 1e27 in minor units, decimals 18, an empty constructorArgs list and contract name Pepe.

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

Result: the token has no defect in the assigned area. One low finding on dependency provenance is recorded in .imd-findings.json, with coverage rows for all three entry points plus the constructor, two invariants, and both vendored libraries.

What I checked

• Execution trace: approve, transfer and transferFrom go straight into the unmodified OpenZeppelin v5.0.2 ERC-20. Zero recipient and zero spender revert, insufficient balance and allowance revert before any write, finite allowances decrement before the balance move, and the max allowance is never decremented. There are no hooks, fees, external calls or sentinel branches, so the factory, distributor and pool-manager flows arrive whole.
• Periphery: the five OpenZeppelin files are byte-identical to the upstream v5.0.2 archive. Context returns msg.sender with no forwarder.
• First principles: the constructor mints exactly 10^27 units to the immediate creator, so a CREATE2 factory holds the whole supply. Name, symbol and decimals match the job. No function can change supply or a holder's balance after deployment. The runtime has no DELEGATECALL, CALLCODE or SELFDESTRUCT and is well under the size limit.
• Local checks: build, all 33 project tests including fuzz and invariant suites, and forge fmt pass. Bytecode sizes match SECURITY.md.

The one finding (low): DEPENDENCIES.md says the vendored files are unmodified and SECURITY.md says all 36 checksums pass, but running the repo's own verification command fails on seven forge-std files. I downloaded the cited upstream v1.9.7 archive and confirmed the checksum file holds the genuine upstream hashes while the committed files were whitespace-reformatted. The token streams are identical, so the change affects nothing compiled, and forge-std is test-only. The fix is to restore those seven files byte-for-byte or regenerate the checksum file and correct the wording.

Not reached: nothing in the assigned area. No launch.json exists yet, so there was no manifest to review. Slither and Mythril were not run beyond the supplied output, which reported nothing at low impact or above.

The review is complete. The findings file is valid JSON, the quoted snippet matches SECURITY.md lines 56-57 exactly, and the working tree is otherwise untouched.

Outcome: no defect in the token's permission model. One informational documentation finding.

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

• src/Pepe.sol is a 16-line OpenZeppelin v5.0.2 ERC-20 whose constructor mints 10^27 units to msg.sender and nothing else. No owner, initializer, mint, burn, pause, blacklist, hook, fee or exemption branch exists.
• All three state-changing entry points are holder-scoped. approve writes only the caller's own allowance. transfer debits only the caller. transferFrom spends the holder's allowance for the caller before moving funds, and the deployer has no bypass.
• The runtime bytecode holds exactly the ten ABI selectors and contains no CALL, DELEGATECALL, CALLCODE, SELFDESTRUCT, CREATE or ORIGIN opcode, so there are no hidden entry points or confused-deputy paths.
• The Trust Gap seams need a privileged actor or an economic formula. This token has neither, so they are empty by construction. The transfer and transferFrom pair is symmetric except for the allowance step, and both roll back together on revert.
• The five vendored OpenZeppelin files are byte-identical to the upstream v5.0.2 archive.
• Build, 33 tests, four fuzz suites and the stateful invariant all pass.

The one finding (info): SECURITY.md and DEPENDENCIES.md claim all 36 vendored checksums pass and the files are unmodified. Running the documented check fails on seven forge-std files. I diffed them against upstream v1.9.7 and every difference is whitespace-only reformatting, so the deployed bytecode is unaffected. The documented integrity procedure gives a false alarm as written.

Coverage record: all three listed entry points marked holds, plus four invariant rows, one of which points at the finding. The file is at .imd-findings.json in the repository root. No scratch tests were needed since no finding reached high severity.

The findings file is in place at the repository root, excluded from git by the harness's own exclude rule as intended, and the only other file I created lives in the ignored scratch directory. No tracked file was changed.

Review result: one low-severity finding, no economic defect

What the token is. src/Pepe.sol is an unmodified OpenZeppelin v5.0.2 ERC-20 with a constructor that mints 10^27 units to msg.sender. It has no owner, no mint or burn path, no fee, no hooks, no receive or fallback, and makes no external calls. I confirmed the vendored ERC20 and its four companion files are byte-identical to upstream v5.0.2.

Economic Security, Invariant and Flow Gap coverage. Every failure mode in the three guides that can apply to a standalone token was checked and holds:

• Conservation of supply held across the delivered invariant suite and my own fuzz over transfer, transferFrom with unlimited allowance, and self-transfer.
• The launch legs split 10 percent, 88 percent and 2 percent of the supply with zero dust, and each leg arrives whole and is claimable whole.
• A modelled Uniswap v4 sync and settle sequence credits exactly the amount transferred on the seed and on a trader's sell, and a buyer receives exactly what the manager pays out.
• CREATE2 deployment through a factory stub credits the factory, not the transaction origin.
• No privileged selector exists; the deployer cannot pull a holder's balance without allowance; the runtime is free of DELEGATECALL, CALLCODE and SELFDESTRUCT.

The one finding (low). The documented integrity check sha256sum --check lib/checksums.sha256 fails for seven forge-std files, while DEPENDENCIES.md says the upstream files are unmodified and SECURITY.md says all 36 checksums pass. The seven files are whitespace-only reformatted copies of upstream v1.9.7, forge-std is test-only, and the token bytecode is unaffected. The reproduction is the command itself, run from the repository root.

What I could not reach. The protected launch test cannot run in this tree because v4-core and the launch helper contracts are not vendored here, so I modelled its settle semantics instead. No launch.json exists yet, so the manifest and the README's stated pool economics were not validated against a brief.

Verification run here. forge build, the full suite of 33 tests including fuzz and invariant runs, forge fmt --check on the project files, and my four scratch tests all pass. The findings file holds the finding plus ten coverage rows covering all three listed entry points.

Added 15 edge-case and fuzz tests covering failures, allowance transitions, and retries. Expanded invariants to 256 runs and 32,768 random calls.

forge build and forge test pass offline: 48 passed, 0 failed. Only test/ changed. No implementation defects found.

The review is complete and .imd-findings.json is written. Nothing further is needed.

Outcome: one low-severity finding, no defect in the token itself.

What I did

• Read the token source, manifest, docs, protected test and the four specialist reports. All four specialists reported the same root cause, so I merged them into one finding.
• Reproduced it. Running the documented sha256sum --check lib/checksums.sha256 on the clean tree fails for 7 forge-std files. I fetched the upstream v1.9.7 files and confirmed the differences are whitespace-only re-wrapping. The five OpenZeppelin v5.0.2 production files are byte-identical to upstream, so the token bytecode is unaffected. Severity stays low: it is a false provenance claim in DEPENDENCIES.md and SECURITY.md, not an on-chain defect.
• Built the project and ran its suite. All 48 tests pass.
• Did my own pass on the token. It is a parameterless OpenZeppelin ERC-20 that mints exactly one billion tokens with 18 decimals to the deployer, with no added functions, no admin role, no fees and no exemptions. A scratch test deployed it through CREATE2 from a contract and exercised approve, transfer and transferFrom including their revert paths. The scratch directory was removed afterwards.
• Checked launch.json against the schema rules. Contract name, empty constructorArgs, totalSupply and decimals all match the code.

Coverage record: all three listed entry points marked holds, plus rows for the constructor, the no-supply-growth invariant and the manifest.

Left for the author: restore the 7 forge-std files to upstream bytes or regenerate the checksum file and reword the two documentation claims. No change to the token source is needed.