Implemented Messenger (MAIL): 1 billion tokens, 18 decimals, minted once to the deployer. No additional minting or administrative controls.

Dependencies are vendored for offline builds. README documents deployment parameters, assumptions, and operational responsibilities.

Validation passed:

• forge build with Solidity 0.8.26
• forge test: 32 tests passed using the specified fuzz seed
• forge fmt --check

Full launch/Uniswap integration checks remain with the network verifier.

I found no defects in the math area, so .imd-findings.json has an empty findings list plus coverage rows. I did not run the Foundry tests; with no finding, there was nothing to prove.

There is very little math to check. src/Messenger.sol is a standard OpenZeppelin ERC20 with nothing changed. Its constructor mints INITIAL_SUPPLY = 1_000_000_000 * 10 ** 18, worked out at compile time, to the deployer once. That matches the stated 1,000,000,000 supply with 18 decimals. There are no fees, burns, tax rates, division or extra mint paths, so nothing can round, lose precision or overflow.

Coverage rows, all holds:

• Messenger.approve(address,uint256): standard OpenZeppelin behaviour with no arithmetic. It reverts for a zero-address spender, and the maximum allowance is never decreased.
• Messenger.transfer(address,uint256): the balance subtraction is checked and moves the exact amount. Sending more than the balance reverts; zero and full-balance transfers are exact.
• Messenger.transferFrom(address,address,uint256): the allowance decrease is checked, and a type(uint256).max allowance is not decreased.
• Supply invariant: total supply stays fixed at 10^27 units because nothing after the constructor can mint or burn.

The aderyn "large numeric literal" lead at src/Messenger.sol:10 is only a style note. The value is correct, so I didn't report it.

I found no defects in the permissions area (access control, trust gaps and asymmetry), so .imd-findings.json has an empty findings list plus a coverage record.

What the token is: src/Messenger.sol is a plain OpenZeppelin v5 ERC20 with nothing overridden. Its constructor mints 1_000_000_000 * 10 ** 18 once to msg.sender, which is the factory at launch.

Access control: There is no owner, role, mint, burnFrom, pause, blacklist or upgrade function anywhere. No external path reaches _mint or _burn, so the supply can't grow after deployment and no privileged account can move or freeze a holder's balance.

Trust gaps and asymmetry: The token has no fees, burns or exempt addresses on transfer. Every account follows the same rules, so the transfers from the factory to the distributor, from the distributor to claimants, the pool seed and swaps all move exactly what they say.

Entry points (all marked holds in the coverage record, along with two invariant rows: supply can't grow, launch flows are exact):

• approve: the caller can only set its own allowance, and a zero spender reverts.
• transfer: moves only the caller's balance, and reverts on an insufficient balance or the zero address as receiver.
• transferFrom: the allowance is checked and spent before the balance moves, and no privileged path skips that check. An unlimited (max) allowance isn't decremented, which is standard ERC-20 behaviour.

Static-analysis lead: Aderyn flagged a large numeric literal at Messenger.sol:10. That's the supply constant, written with digit separators, and it's correct, so it isn't a defect.

The project's 32 existing tests all pass under forge test. I had nothing to prove, so I wrote no scratch tests. I traced the vendored OpenZeppelin source directly but didn't check it against the upstream release.

Wrote launch.json for the Messenger (MAIL) launch. It is the only changed file.

What the manifest says

• Token contract is Messenger, name Messenger, symbol MAIL, decimals 18. Its constructor takes no arguments, so constructorArgs is empty, matching the ABI reported by forge inspect.
• totalSupply is one billion tokens in minor units, exactly what the constructor mints to msg.sender via INITIAL_SUPPLY.
• contracts is empty. The accepted tree contains only the token, with no application contracts and no initialization calls.
• pool and economics are copied verbatim from the launch reference, with IMD as the paired currency, fee 12500 and tick spacing 60.
• notes describe the token's fixed supply and lack of any privileged mechanism, well under the 4000-character limit.

Checks run

• A script confirmed the manifest's key set, the supply figure, and that pool and economics match the job byte for byte.
• forge build compiled cleanly.
• forge test with the verifier's fuzz seed passed all 32 tests across 3 suites, including the invariant suite.
• git status shows launch.json as the only new or modified file.

The review is complete and .imd-findings.json holds one low finding and eight coverage rows. The working tree is otherwise untouched.

Result: the Messenger token is a plain, unmodified OpenZeppelin v5.1.0 ERC20 with a single constructor mint, and all three entry points hold.

• approve reverts for a zero spender, overwrites the allowance, emits Approval, and treats max uint256 as the documented infinite sentinel. The classic approve race is a known ERC20 property the README already documents, not a defect of the requested design.
• transfer reverts for a zero receiver or insufficient balance, moves exact amounts with no fee or burn, handles self-transfer correctly, and makes no external calls.
• transferFrom spends the allowance before moving tokens, so any later revert unwinds atomically. The factory cannot pull a holder's balance without an approval.
• Constructor and supply mint exactly one billion tokens with 18 decimals to msg.sender once. No mint, burn, owner, pause or upgrade path exists afterwards. The deployed runtime contains no DELEGATECALL, CALLCODE, SELFDESTRUCT, PUSH0 or transient-storage opcodes.
• Existing suite builds and passes under the README's fuzz seed. The formatter check also passes.

One low finding, in the Periphery area. The dependency notes say the vendored sources are unmodified upstream and point to per-directory checksum files for proof. Running sha256sum -c fails for two OpenZeppelin files and eighteen forge-std files. I fetched both upstream archives, whose hashes match what the notes state, and compared every file with whitespace stripped. All are identical to upstream, so this is a forge fmt reformat after vendoring and the compiled bytecode is genuine OpenZeppelin. The defect is a broken provenance record: a verifier following the notes gets a failure and cannot distinguish a reformat from a tampered base contract without redoing that diff. No proof test is attached since the failure is not in Solidity behaviour.

Not reached: a live Uniswap v4 seed and swap, since no v4 sources exist in this tree. Nothing in the token's transfer logic could treat the pool manager differently from any other address, so I see no token-side risk there.

The review is complete and the working tree is clean.

Outcome. The Messenger token's economics hold. It is a verbatim OpenZeppelin v5.1.0 ERC-20 with one constructor mint of 1e27 units to the factory, no owner, no fee, no hook, no callback, and no path that can grow supply or move a holder's balance. I found one low-severity defect, recorded in .imd-findings.json with a reproduction.

Finding (low). DEPENDENCIES.md claims the vendored OpenZeppelin sources are unmodified and hash-recorded, but sha256sum -c fails on two files. I downloaded the upstream v5.1.0 files and diffed them. The differences are whitespace only, from a formatter line-wrapping two declarations. A build with the pristine files produces byte-identical runtime bytecode, so there is no economic impact. The defect is a false provenance claim that breaks the documented verification step. Suggested fix: restore the upstream bytes and keep lib out of the formatter, or regenerate the checksums.

What I checked against the three guides:

• Economic Security: no external dependencies, oracles, fees or sentinel-address quirks beyond standard zero-address reverts. ERC-20 surface is exactly approve, transfer and transferFrom plus views. No receive or fallback.
• Invariant: supply constant after construction, balances conserved, allowance accounting exact. Confirmed by the repo's invariant suite and a scratch fuzz I ran and then deleted.
• Flow Gap: the launch split, distributor claim, and the Uniswap v4 sync/transfer/settle pattern all move the exact amount. The pristine-upstream build comparison closes the "modified library" seam.

Coverage record. All three listed entry points are marked holds, with six invariant and flow rows also holds and one provenance row pointing at the finding. Nothing was left unreached.

Verification run. Full suite with the documented seed: 32 tests passed. Formatting check passed. Scratch probes passed and were removed. Only ignored build output and the findings file remain outside the committed tree.

Added boundary and failure-path tests, plus stateful invariants tracking supply, balances, and allowances across valid and rejected calls.

Offline forge build and forge test passed with the required seed: 52 tests passed, including 32,768 invariant calls.

Only test/ files changed. No implementation defects found.

I found one low-severity finding and nothing that blocks deployment. The token code itself holds up. The findings and coverage record are in .imd-findings.json.

The one finding (low): the dependency checksums don't match, which also covers both specialist reports. The economics and flow specialists reported the same problem, so I merged their two findings into one.

• Where: DEPENDENCIES.md:3 says "Upstream sources are unmodified" and that the SHA256SUMS files record the included files.
• What I saw: running sha256sum -c SHA256SUMS fails for 2 of 6 files in lib/openzeppelin-contracts (ERC20.sol and draft-IERC6093.sol) and 18 of 26 in lib/forge-std.
• Cause: I downloaded the v5.1.0 originals. Their hashes match the recorded ones exactly (be0df7e4…, 56380323…). The vendored copies differ only by line wrapping from forge fmt, at ERC20.sol:280-283 and draft-IERC6093.sol:121-123.
• Impact: none on behaviour or funds. The damage is that the integrity check the docs point to fails, so a reviewer can't tell a harmless reformat from a tampered base contract without diffing against upstream by hand.
• Fix: restore the original upstream files, or regenerate the checksums and drop the "unmodified" wording. Both options touch lib/ except a wording-only change to DEPENDENCIES.md.

Coverage, my own checks:

• approve, transfer, transferFrom: holds. Messenger adds nothing to the standard OpenZeppelin v5.1.0 ERC20: no fees, burns, exemptions, owner, mint, pause or blacklist. Every launch transfer moves exactly the amount requested.
• Supply: holds. The constructor mints 1,000,000,000 × 10^18 once to the deployer, matching totalSupply in launch.json. The static-analysis "large numeric literal" warning is correct code, not a defect.
• Deployability: holds. The constructor takes no arguments, matching the empty constructorArgs. The contract is 1,814 bytes deployed and 2,722 bytes of creation code, far under both limits. It uses no DELEGATECALL, SELFDESTRUCT or linked libraries.
• Manifest: launch.json uses only schema keys and its types and addresses are valid. I couldn't check economics against the original job, because the job's values weren't given to me.
• Tests: forge build succeeds and all 52 tests pass. I couldn't run the protected floor tests here, because the files they import (floor/OwnerChecks.sol, src/LaunchLiquidity.sol, v4-core) aren't in this tree.

I modified no repository files. However, git status lists files I didn't create: shell profiles, .claude/, .gitmodules, .mcp.json, .idea, .vscode and others. They need removing before upload, or the submission may be rejected for touching files.