Implemented IMDog (IMDOG): 1,000,000,000 tokens, 18 decimals, minted once to the deployer. Dependencies are vendored; deployment assumptions and operational responsibilities are documented in README.md.

Verified with Solidity 0.8.26:

• forge build — passed
• forge test — all 27 tests passed, including failure, fuzz, and invariant coverage
• forge fmt --check — passed

Full pool integration remains the network launch verifier’s responsibility.

Created launch.json with the exact supply, economics, paired currency, and matching constructor arguments.

Schema and ABI checks passed. forge build succeeded; forge test passed all 27 tests.

Only launch.json is changed.

The review is complete and the findings file is written. The working tree has no changes beyond the required output file.

Result: no defects found in the math, boundary, or numerical-gap area. The findings file at .imd-findings.json holds an empty findings list and eight coverage rows.

What I checked, against the Math Precision, Boundary, and Numerical Gap guides and the Senior Auditor's Mindset:

• Supply constant. The literal evaluates at compile time to exactly 10^27, which is one billion tokens at 18 decimals, matching the manifest. The aderyn large-numeric-literal lead is stylistic only.
• Transfer arithmetic. The token is unmodified OpenZeppelin v5.4.0 ERC-20. Every unchecked subtraction is guarded by a prior comparison, and the unchecked recipient add is bounded by total supply. Max-uint, zero, self, and full-supply transfers behave exactly as the standard requires, with failed paths leaving balances and allowances untouched.
• Allowance arithmetic. Infinite allowance is not decremented, exact allowance spends to zero, and one unit more reverts.
• Launch share arithmetic. The 10% swarm share, the 2% and 8% sub-pots, and every poolBps from 1 to 9000 divide 10^27 with zero remainder, and the intermediate products stay far below 2^256.
• Boundaries. No external calls, no bytes decoding, no payable surface, no receive or fallback. Ether sent on any selector reverts.
• Dependencies. All five vendored OpenZeppelin files are SHA-256 identical to the upstream v5.4.0 tag.

Coverage rows mark all three ABI entry points as holds, plus five invariant and boundary rows. The existing 27-test suite passes, and my six scratch probes passed before I removed them. One lead I could not exercise locally is the protected harness's live Uniswap v4 seed and swap, which depends on network infrastructure not present in this project; nothing in a plain fixed-supply ERC-20 gives a reason to expect it to fail.

Review complete. No defects found in the IMDog token for my area (Execution Trace, Periphery, First Principles). The findings file at .imd-findings.json holds an empty findings list and nine coverage rows, and the working tree has no other changes.

What I checked

• Execution trace of all three entry points. transfer, approve and transferFrom resolve to the unmodified OpenZeppelin v5.4.0 base. Every failure path reverts atomically, amounts move exactly, zero-address and max-allowance sentinels behave as the standard intends, and there are no external calls, hooks, stale reads or partial state updates.
• Periphery. I downloaded the OpenZeppelin v5.4.0 archive and diffed it against lib/. All five vendored sources and the licence are byte-identical, and the archive hash matches the provenance note. The library is committed as plain files, with no submodule.
• First principles. Via a scratch test, raw CREATE2 from a factory contract mints the full 1e27 supply to the factory rather than the transaction origin. Unknown selectors and ETH-carrying calls revert. Nothing after the constructor can mint or burn, and name, symbol and decimals match the brief.
• Launch floor. With no tax, burn or exemption list, every launch leg moves exactly what it says, so the protected harness's swarm, seed, swap and privileged-hand checks are satisfied by construction. The runtime has no forbidden opcodes.
• Existing suite. Build, 27 tests including fuzz and invariant runs, and formatting check all pass offline.

One item noted but not reported. The classic ERC-20 approve front-running sequence reproduces here, but it is standard token semantics that the README explicitly documents, so it is recorded as a trust assumption in the coverage row rather than a finding.

Nothing was left unreached. The scratch test was removed after running.

The findings file is in place at the repository root, the scratch test is removed, and no tracked file changed. The review is complete.

Result: no defects found in the Access Control, Trust Gap and Asymmetry areas. The file .imd-findings.json holds an empty findings list and eight coverage rows, all holds.

What I checked

• Permission model. The ABI contains only approve, transfer and transferFrom as state-changing entry points, plus views. There is no owner, minter, pauser, initializer, receive or fallback. The constructor takes no arguments and mints exactly 10^27 units to msg.sender, which the CREATE2 test and a prank with a different tx.origin both confirm is the factory and not the origin.
• Unreachable supply branches. The mint branch of the internal update function needs from equal to the zero address, and both external routes reject that sender. The burn branch needs to equal to the zero address, and both routes reject that receiver before any allowance is consumed. The internal burn helper has no caller at all.
• Trust gap. The initial holder has no continuing power. It cannot pull from another holder without a grant, and approve binds owner to msg.sender so it cannot grant itself an allowance on anyone else's behalf. No forwarder exists, so appended calldata does not override the sender.
• Asymmetry. Allowances are isolated per owner and spender pair. Approve writes an absolute value with an event, spending decrements without one, which is documented OpenZeppelin behaviour. The infinite allowance boundary is exactly uint256 max, and max minus one decrements normally. A failed transferFrom rolls the allowance back atomically.
• Dependency integrity. The five vendored OpenZeppelin files hash identically to the upstream v5.4.0 tarball, so no guard was altered.
• Static-analysis lead. The large-numeric-literal note on line 10 is a compile-time constant equal to 10^27 and is not a defect.

Evidence. The existing 27 project tests pass. A seven-test scratch file I wrote under test/scratch exercised each claim above and passed, and I removed it afterwards as the assignment specifies.

Trust assumptions, not defects. The factory controls the whole supply until it forwards it, which the launch design requires. The ERC-20 approve change race is inherent to the standard and the README already documents it. Both are recorded as coverage rows rather than findings.

Review complete. .imd-findings.json is written with an empty findings list and a 7-row coverage record (all three ABI entry points plus four invariants). No files in the tree were changed; scratch tests were removed.

Summary

Scope: src/IMDog.sol (16 lines: IMDog is ERC20, constructor mints 1_000_000_000 * 10**18 to msg.sender) under the Economic Security, Invariant and Flow Gap guides, with the Senior Auditor's Mindset applied first.

Result: no defects found. Every failure mode in the three guides was either checked and holds, or does not apply because the surface it targets does not exist in this contract.

What I verified, with evidence:

• Dependency integrity (the main way a trivial token hides a bug): fetched the upstream OZ v5.4.0 archive, confirmed its SHA-256 matches UPSTREAM.md, and diffed all five vendored .sol files + LICENSE — byte-identical. The token is therefore exactly OZ ERC20 v5.4.0 behaviour.
• Supply invariant: 10**18 binds tighter than *, so INITIAL_SUPPLY = exactly 1e27; ABI exposes only approve/transfer/transferFrom as state-changing; nothing mints after the constructor, and transfer-to-zero reverts, so supply is constant in both directions.
• Launch-flow economics: the 10 % swarm share (1e26) and every poolBps slice 1–9000 of 1e27 divide exactly; a scratch sync→transfer→settle leg (the PoolManager pattern) credited the exact amount in both directions; a canary contract confirmed no callback on transfer, so no reentrancy seam. Mint target is msg.sender (the factory), not tx.origin; constructor is nonpayable with no args, so the CREATE2 address depends only on factory+salt.
• Conservation: project invariant suite (256×64 calls, fail_on_revert) plus my scratch tests — all 27 project tests and 6 scratch tests pass.
• Static-analysis leads: Slither reported nothing; Aderyn's "large numeric literal" at line 10 is style — the value was verified correct.

Noted but not reported as a finding: the standard ERC-20 approve race (quantified: 150 moved where the owner intended at most 100). It is inherent to the interface, documented in the README, and not an implementation defect against the requested plain-ERC-20 design.

Not covered: the live Uniswap v4 seed/swap through the protected harness needs the network's factory, PoolManager and manifest parameters, which are not in this tree; the launch verifier runs that. No launch.json exists yet, which is expected at this stage.

Added 12 edge/fuzz tests and strengthened invariants covering rejected calls, approval boundaries, and balance/allowance conservation.

Offline forge build and forge test pass: 39 tests, including 32,768 randomized handler calls.

Only test/ changed. No defects found.

Review complete. .imd-findings.json is written with an empty findings list and a full coverage record; the only change in the tree is that output file (the scratch test was removed).

Result: no defects

Specialist findings: all four areas (math, flow, permissions, economics) and the independent test writer reported nothing, so there was nothing to reproduce, merge, or drop. Both acceptance criteria are satisfied vacuously.

Static-analysis leads: slither empty; aderyn's large-numeric-literal at src/IMDog.sol:10 is 1_000_000_000 * 10 ** 18, a compile-time constant that equals the manifest's totalSupply exactly — not a defect.

My own pass (with the vendored OZ read end to end, since that is where all the logic lives):

• src/IMDog.sol is a 16-line contract: ERC20("IMDog","IMDOG") plus _mint(msg.sender, INITIAL_SUPPLY). No owner, mint, burn, pause, fee, hooks, receive/fallback.
• All five vendored OZ files are sha256-identical to upstream tag v5.4.0; lib/ is plain tracked files, no submodule.
• Scratch tests (run, then deleted): supply minted to msg.sender from a deployer contract; transfer/approve/transferFrom move exactly the stated amount across 512 fuzz runs with supply constant; unknown admin selectors and ether sends revert; runtime bytecode contains no DELEGATECALL/CALLCODE/SELFDESTRUCT.
• Manifest cross-check: constructorArgs: [] matches the 0-input ABI constructor, decimals 18, totalSupply matches the constant. Whether economics is a verbatim copy of the job is admission's check, not something visible from the tree.
• Existing suite: 39 tests pass, invariant run 256×64 with zero reverts.

Coverage: all 3 listed entry points holds, plus five invariant rows (constructor mint, no supply growth/privileged powers, opcode scan, vendored-dependency integrity, specialist/static leads).