Implemented Imd6900.sol: 1 billion IMD6900, 18 decimals, minted once to the deployer, with no transfer fees.

• forge build, forge test, and forge fmt --check pass.
• All 25 tests pass, including failure, fuzz, and invariant coverage.
• Clean offline verification with an empty environment produced identical bytecode.
• Dependencies are vendored; deployment parameters and responsibilities are documented in README.md.

Full network launch integration was not run locally.

The review is complete and found no defects. The findings file holds an empty list and a full coverage record. The tree is unchanged apart from that file.

What I checked, in the assigned area

• Access control. The compiled ABI has exactly three state-changing functions and no receive or fallback. There is no owner, minter, pauser, blacklist, upgrade path or initializer. The constructor mints the whole supply once to the immediate deployer, and after it transfers that supply away it holds only ordinary holder rights. I confirmed this with a scratch test that had the factory attempt transferFrom, transfer, admin selectors and ETH sends after distribution. All reverted.
• Trust gap. No caller class gets a different economic result. The internal update path has no address-dependent branch, so factory, distributor, PoolManager and traders all move exact amounts. There is no admin setter, so nothing can redirect in-flight value.
• Asymmetry. The transfer and transferFrom paths debit and credit identically. An owner acting as its own spender still needs a self-allowance. The unlimited-allowance sentinel is the documented OpenZeppelin behaviour. Allowances are only writable by their owner, which is the unmodified Context sender.
• Supply chain. All five vendored OpenZeppelin files hash to the values in DEPENDENCIES.json and read identical to upstream v5.0.2. There are no submodules.

Static-analysis leads

The aderyn large-literal note on line 10 is the supply constant, which equals the manifest's 10^27 minor units. It is not a defect.

Coverage record

Three extra rows record the invariants I checked: no privileged role or mutable supply, vendored library integrity, and exact launch flows.

Limits

The existing project suite and my scratch probes ran locally, 31 tests in total, all passing. The protected harness requires the v4 launch infrastructure that is not in this repository, so pool seeding and swap execution remain for the network's integration environment. Slither and Mythril were not run.

The review is complete. Findings and coverage are written to .imd-findings.json, and no project file was changed (the scratch test I used was removed, and build artifacts are gitignored).

Outcome: no economic defect found. The token is an unmodified OpenZeppelin v5.0.2 ERC-20 with one constructor mint and no fee, hooks, owner, or admin path. One info-level note is recorded.

What I checked, against the Economic Security, Invariant and Flow Gap guides:

• Supply and recipient. The constructor mints exactly 10^27 units to the caller, so under CREATE2 the factory holds the whole supply. Decimals are 18. No constructor arguments.
• Supply cannot grow. The ABI has only approve, transfer and transferFrom as state-changing functions. The existing invariant run and my fuzz confirmed conservation of total supply and sum of balances.
• Launch legs arrive whole. I fuzzed every legal poolBps from 1 to 9000. Swarm share, pool seed and remainder always sum to the supply with zero dust, because 10^27 divides evenly by 10^4, and the factory ends at zero balance. Pulls via transferFrom are exact.
• No privileged powers. No pause, blacklist, seize, burnFrom, rescue or upgrade exists. The runtime has no DELEGATECALL, CALLCODE or SELFDESTRUCT.
• Vendored code integrity. All six OpenZeppelin files hash to the digests in DEPENDENCIES.json. Build passes and all 25 existing tests pass.
• Static analysis lead. The aderyn large-literal note is style only; the literal evaluates to exactly 10^27.

The single recorded item is the inherent ERC-20 allowance replacement race. A spender who front-runs a lowering of their allowance from 100 to 50 can take 150. I reproduced it in Foundry, but it is standard behaviour already disclosed in the README and affects only an owner who approved an untrusted spender. It is recorded at info severity and does not block the launch.

Coverage has nine rows: the three entry points, five invariants, and one honest unreached row for the seed and swap through a real Uniswap v4 PoolManager. That harness needs v4-core, LaunchLiquidity and launch environment variables that are not in this repository, so I modelled the token-side flows with plain transfers instead.

The findings file is in place at the repository root and is excluded from git by the workspace's own exclude rule, which is the expected arrangement for a review deliverable. The scratch directory is removed and the tree is otherwise unchanged.

Review result: no defects found

I audited the Imd6900 token against the Execution Trace, Periphery and First Principles guides, with the Senior Auditor's Mindset read first. The token is a 16-line contract that inherits OpenZeppelin ERC20 v5.0.2 unchanged and mints the whole supply to the deployer in its constructor. Nothing in my area produced a substantiated defect, so .imd-findings.json holds an empty findings list and six coverage rows.

What I verified

• Execution Trace. Traced all three entry points from call to final storage. Every guard sits before every write, there are no external calls, and each function writes its coupled state in one body, so no partial state or stale read is reachable. Reverts in the transfer step of transferFrom roll back the allowance write.
• Periphery. Downloaded the upstream v5.0.2 archive and compared it byte for byte with the six vendored files. All are identical, and the archive hash matches the one recorded in DEPENDENCIES.json. The library is committed as plain files with no submodule.
• First Principles. The constructor cannot mint to the zero address, the supply constant equals exactly 10^27, no path grows or shrinks supply after deployment, and there is no receive, fallback, owner, pause, blacklist or upgrade mechanism. The runtime contains no DELEGATECALL, CALLCODE or SELFDESTRUCT.
• Launch floor. With no fee and no exemptions, the swarm share, pool seed and both swap directions move exact amounts, which is what the protected harness requires.
• Static analysis lead. The aderyn large-literal note points at a compile-time constant that evaluates correctly. Not a defect.

Behaviours confirmed by a scratch test, then discarded

Seven tests passed: factory deployment holds the whole supply, self transferFrom needs an allowance, the standard ERC-20 approve race behaves as documented, self-transfer via transferFrom consumes allowance without changing balance, tokens sent to the token's own address are stuck with supply unchanged, native currency is rejected, and no mint selector exists. The approve race and stuck-token cases are inherent ERC-20 properties the README already documents, so I recorded them as coverage notes rather than findings.

Not covered

The protected harness's live Uniswap v4 seed and swap cannot run here because the v4 dependencies and launch addresses are not in this repository. My coverage of those flows is by trace of the token's transfer paths, not by executing the pool.

The audit is complete and the findings file is written. The working tree is clean apart from .imd-findings.json, and the scratch tests are removed.

Outcome: no math, boundary or numerical-gap defect in the token. The contract is a fixed-supply OpenZeppelin v5.0.2 ERC-20 with one constructor mint and nothing else. There is no division, no scaling, no downcast, no external call, no payable path and no sentinel branch beyond OpenZeppelin's zero-address rejections. The one reproducible discrepancy I found is a provenance record, reported at info severity.

What I checked, per the three assigned guides:

• Math Precision. The only arithmetic the token adds is the compile-time constant on src/Imd6900.sol:10, which is exactly 10^27 and matches the brief. The inherited _update uses unchecked subtraction and addition, both guarded by the prior balance check and by the fixed supply, so neither can wrap. The aderyn large-literal lead is exact and intended.
• Boundary. Each entry point was probed with 0, 1, full supply, supply plus one, and max uint256 for amounts, and with 0, 1, max minus one and max for allowances, plus zero-address owner and recipient and native value sent to the contract. Every case either delivered the exact amount or reverted with no state change. Eleven scratch tests confirmed this and were deleted afterwards.
• Numerical Gap. The supply is divisible by 10,000, so the swarm share and any pool share derived in the launch harness are exact integers with no dust, and the largest pool share fits in uint128 for Uniswap v4 math. The existing invariant suite and all 25 project tests pass.

Reported finding (info, outside my area): DEPENDENCIES.json records SHA-256 hashes that no longer match seven vendored forge-std files. Diffing against the upstream v1.9.7 archive shows only reflowed whitespace from forge fmt, so behaviour is unchanged, but the README claims the file records the hash of every vendored file. All OpenZeppelin hashes match. The fix is to restore the byte-for-byte upstream files or re-record the hashes.

Coverage: all three entry points are marked holds, with four extra rows for the supply constant, exact launch shares, supply conservation, and the absence of external boundaries. Nothing was left unreached. Per-wallet splitting of the swarm's share lives in the distributor, not this token, and was not in scope.

Created launch.json with the exact token supply, empty constructor arguments, required paired currency, and verbatim economics.

Schema and constructor checks passed. forge build succeeded; all 25 local tests passed. Only launch.json is changed for submission.

Added 12 regression/fuzz tests and strengthened invariants for balances, allowances, failure rollback, and holder transferability.

Offline verification passed:

• forge build
• forge test: 37 passed, 0 failed
• Invariants: 256 sequences, 16,384 calls

Only test/ changed. No defects found.

The review is complete and .imd-findings.json is written. The only working-tree change is that file, as the task requires.

Outcome. The token is defect-free on every entry point. Both specialist findings reproduced and are kept at info severity. Nothing new was found in my own pass.

What I verified

• Reproduced the allowance race from the economics specialist with a scratch Foundry test. Approving 100, spending it, re-approving 50, then spending again yields a spender balance of 150. This is standard ERC-20 behaviour that the README already discloses, so it stays at info.
• Reproduced the dependency hash drift from the math specialist. Re-hashing every entry in DEPENDENCIES.json gives seven forge-std mismatches and zero OpenZeppelin mismatches. The inherited ERC20 is byte-for-byte upstream v5.0.2, and the full suite of 37 tests passes, so the drift is a provenance record inaccuracy only.
• No duplicates to merge. Each finding had a single reporter in distinct areas.
• Own pass. The contract is one constructor over unmodified OpenZeppelin ERC20. Supply, decimals and recipient match the manifest. A runtime opcode scan finds no DELEGATECALL, CALLCODE, SELFDESTRUCT, CALL or CREATE. There is no owner, hook, fallback or mint path. The aderyn large-literal lead is the supply constant, which equals the manifest value exactly.

Coverage record. All three ABI entry points are marked holds, plus three invariant rows covering the constructor mint, the absence of privileged surface, and the dependency provenance finding.

One housekeeping note: an early tool call mistyped the repository path and created an empty directory outside the repo. I deleted it immediately, and the scratch test directory was removed after use.