The deliverable is complete, but I could not verify it with forge: every shell command in this session was refused by the sandbox before running, with the error below, including with the sandbox override flag.

apply-seccomp: write /proc/self/setgroups (nested userns is capability-restricted; caller must provide CAP_SYS_ADMIN): Permission denied

So forge build, forge test and forge fmt --check were not run here. The verifier's offline run is the first time this code will be compiled. I desk-checked every file against the solc 0.8.26 rules and the protected floor tests instead, and kept the Solidity deliberately plain to minimise blind-compile risk.

What was built

• src/ReceiptsToken.sol: contract ReceiptsToken, name RECEIPTS, symbol RCPTS, 18 decimals. The constructor takes no arguments, calls no contract, and mints the whole supply once to msg.sender. Supply in minor units is 1000000000000000000000000000.
• src/ERC20.sol plus src/interfaces/: a self-contained ERC-20 base with OpenZeppelin v5 semantics and ERC-6093 custom errors. No owner, no mint path after the constructor, no burn, pause, blocklist, fee or external call, so the launch flows arrive whole and the floor's privileged-call probes all revert without effect.
• foundry.toml: solc 0.8.26, EVM cancun, optimizer 200 runs, bytecode_hash = "none", ffi off, no filesystem permissions.
• test/ReceiptsToken.t.sol: 27 tests. Success paths cover metadata, mint-to-deployer from two different deployers, transfer, approve, transferFrom and infinite allowance. Failure paths cover insufficient balance, insufficient allowance, zero-address receiver and spender, every common admin selector from a stranger and from the deployer, ether rejection, and a runtime-bytecode scan for DELEGATECALL, CALLCODE and SELFDESTRUCT mirroring the floor test. Four fuzz tests bound inputs arithmetically rather than rejecting them, so they behave the same under the verifier's seed.
• test/support/Vm.sol and TestBase.sol: the handful of cheatcodes the tests use and reverting assertions. Nothing is vendored, so there is no dependency the offline verifier can miss.
• README.md: token and launch parameters, manifest values for the token entry, assumptions, "After launch" (nothing to configure), operational responsibilities, and the eth-security checklist mapped to this contract.

Open items

• Build, tests and formatting must be confirmed by the verifier, since this machine would not execute commands. If it fails, the most likely spots are the test file's cheatcode ordering or the inline string array, both copied from patterns the protected floor test itself uses.
• Slither and Mythril did not run. Explorer verification and an independent adversarial review remain with the deployer and the network, as the README states.

Done. I wrote launch.json for the RECEIPTS (RCPTS) custom token launch and it is the only changed file.

What the manifest says

• Token contract ReceiptsToken, name RECEIPTS, symbol RCPTS, 18 decimals, empty constructorArgs, totalSupply of one billion tokens in minor units. This matches the accepted constructor, which takes no arguments and mints the whole supply once to msg.sender.
• No application contracts. The accepted tree contains only the token and its ERC-20 base.
• Pool and economics copied verbatim from the launch terms: IMD as paired currency, fee 12500, tick spacing 60, the one-to-one provenance price, and the requester's economics object.
• Notes describe the token's fixed supply, lack of any privileged path or transfer fee, and that initialPrice is provenance only.

Verification

• A JSON check confirmed only schema keys are present, economics matches the job's object exactly, totalSupply equals 1e27, and notes are under the limit.
• forge build compiled cleanly and forge test with the verifier's fuzz seed passed all 30 tests.
• Git status shows launch.json as the only new file. No configuration file was touched.

The review is complete and the findings file is written. No source files were changed, and the scratch test directory has been removed.

Result: no math defect found. The token is a 160-line ERC-20 mirroring OpenZeppelin v5, with no external calls, no payable paths and no privileged functions. I checked it against the Math Precision, Boundary and Numerical Gap guides and confirmed each boundary with a Foundry scratch test that I ran and then deleted.

What I verified in the assigned area:

• Supply constant. The literal in ReceiptsToken.sol line 22 is a compile-time rational equal to 1e27, which the aderyn "large numeric literal" lead flags only for style. The repository tests already assert it against the minor-unit value.
• Unchecked blocks. The balance subtraction follows an explicit check. The balance addition is bounded by the conserved supply of 1e27. The burn branch that decrements supply is unreachable because every path rejects the zero address.
• Allowance sentinel. The max-uint allowance is never decremented, max-minus-one is, and the balance check still applies under an infinite allowance.
• Edges. Zero amounts, whole-balance transfers, self-transfer of the whole balance, max-uint amounts and balance-plus-one all behave as intended with correct ERC-6093 error arguments.
• Launch splits. The 10%, 88% and 2% shares of 1e27 are exact integers, so the factory's basis-point math truncates nothing.

The file holds one informational note: the standard ERC-20 approve race, reproduced with a concrete sequence where a spender ends up with 150 after the owner meant to cap at 100. It is the standard's own property, matches the intended OpenZeppelin v5 semantics, and needs no fix to ship.

The coverage record answers all three listed entry points as holds, plus four invariant and boundary rows. Nothing in the assigned area was left unreached.

The review is complete. The RECEIPTS token has no access-control, trust-gap or asymmetry defects, and the findings file records an empty list with full coverage.

What I checked

• Access Control guide. The permission map is empty by design: no owner, roles, initializer, proxy or external calls. The ABI exposes exactly the twelve ERC-20, metadata and constant getters, and a fuzz of unknown selectors from arbitrary callers always reverts with no state change. The deployer's only power is holding the supply it was minted, and it cannot pull a holder's tokens without an allowance.
• Asymmetry guide. The transfer and transferFrom paths share one _update primitive, so there is no mirror update to miss. The approve and allowance-spend pair differ only in the Approval event, which matches OpenZeppelin v5. All five storage slots have a matching writer and reader. The burn branch of _update is unreachable, not a defect.
• Trust Gap guide. With no privileged actor and no price or fee computed inside the token, no seam between authorization, economics and asymmetry exists.
• Launch floor. The constructor takes no arguments and mints exactly 1e27 units to its caller, the runtime code is identical regardless of deployer, and the opcode walk finds no DELEGATECALL, CALLCODE or SELFDESTRUCT. The existing 30 tests, formatting check and my six scratch probes all pass.

Static-analysis leads. Slither reported nothing. Aderyn's large-numeric-literal note at src/ReceiptsToken.sol:22 is the supply constant, which the tests confirm equals 1e27. It is not a defect.

Trust assumptions, not findings. Whoever runs the constructor receives the whole supply, so the launch depends on the factory being that caller. Standard ERC-20 approve semantics apply, including the documented infinite-allowance behaviour.

The deliverable is .imd-findings.json at the repository root with zero findings and eight coverage rows, one per listed entry point plus five invariant rows. The scratch test directory was removed, and no repository file was changed.

The review is complete and the findings file is written.

Result: no defects found in the economics of RECEIPTS (RCPTS). The findings file at .imd-findings.json holds an empty findings list and a coverage record with seven rows, one for each of the three verifier-listed entry points plus four invariant and flow rows.

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

• Supply and literal. The whole supply is minted once in the constructor to the deployer. The aderyn large-literal lead resolves to exactly 1e27, which the existing tests and my probe both confirm. No mint, burn, owner, pause or blocklist selector responds, and there is no fallback or receive.
• Conservation. The sum of balances equals total supply after 256 fuzzed sequences of eight random transfers among four actors. The burn branch of the balance primitive is unreachable because both callers reject the zero address, so the unchecked arithmetic is safe at this supply.
• Round trips and boundaries. Transfers at 1 wei and at the full supply return exactly what was sent. Self-transfer by transfer and by transferFrom keeps the balance. Allowance edges behave as OpenZeppelin v5: max is infinite, max minus one is decremented, failed calls change nothing.
• Launch flows. A simulated factory split of 10, 88 and 2 percent leaves the factory at exactly zero, and a PoolManager-style pull and pay via transferFrom and transfer moves exact amounts both ways. The token has no fee or exemption list, so the protected floor's whole-arrival checks hold. Empty constructor arguments and the supply figure match what the README says the manifest should state.
• Existing suite. All 30 project tests pass, and the source formatting check is clean.

Not a defect, recorded as a note. Ordinary ERC-20 approve front-running is present, identical to OpenZeppelin v5, and the README already advises exact approvals. I recorded it in a coverage row rather than as a finding since changing it would break standard semantics.

Scope limits. No Uniswap v4 or forge-std library is vendored here, so the real PoolManager seed and swap were simulated with a transfer-and-delta probe rather than run against v4 code. The protected floor test will exercise the real path. The scratch test directory was removed; the working tree is unchanged apart from the findings file.

The review is complete and the findings file is written. No defects were found.

Result: .imd-findings.json holds an empty findings list and seven coverage rows, all holds. The tree is unchanged apart from that file. The scratch tests I used were removed.

What I checked, from the Execution Trace, Periphery and First Principles guides

• Execution trace of all three entry points. approve, transfer and transferFrom in src/ERC20.sol are a line-for-line match of OpenZeppelin v5 semantics. Every failure path reverts before any state write with the exact ERC-6093 error and arguments. Self-transfer, whole-balance transfer, zero value, exact allowance, infinite allowance, allowance above balance, and from == address(0) were each run in scratch tests and behaved as specified. transferFrom from the zero address cannot mint.
• Periphery. The base contract, the three interfaces and the test support stubs were read in full. The only unchecked blocks are guarded by a preceding balance check or bounded by the fixed supply. decimals() is a constant 18. The compiled ABI exposes exactly the three listed nonpayable functions, with no receive or fallback.
• First principles and launch floor. The supply constant is 1e27 and is minted once to msg.sender through an internal _mint. Nothing can grow the supply afterwards. There is no fee, burn, pause, blocklist or exemption list, so the swarm share, pool seed and swaps in the protected floor test all move whole amounts. Disassembly of the compiled runtime shows no CALL, DELEGATECALL, CALLCODE, CREATE or SELFDESTRUCT.
• Dynamic checks. The project's 30 tests pass, including the fuzz suite under a second seed at 2000 runs. A stateful scratch fuzz of 24-step random transfer, approve and transferFrom sequences across four actors kept the sum of balances equal to the total supply across 1000 runs. forge fmt --check passes.

Static analysis leads. Slither reported nothing. Aderyn's one low-impact line, the large numeric literal at src/ReceiptsToken.sol:22, is the intended supply constant and not a defect.

Trust note, not a finding. The standard ERC-20 approve front-running pattern applies, as it does to OpenZeppelin v5. The README documents it as a holder responsibility. It is recorded as a coverage row.

Not covered. No manifest exists yet, so launch.json was not reviewed. Nothing in my area was left unreached.

Done. The suite is green with the verifier's seed, only test paths changed, and I found no defect to report.

What I added

• test/ReceiptsToken.invariant.t.sol: a handler that drives the token from five actors plus the token's own address as a sink, with ghost accounting for flows and allowances. Nine actions cover both happy paths and failure paths: transfer, approve, transferFrom, transfer above balance, transfer to zero, approve of the zero spender, transferFrom above a finite or infinite allowance, transferFrom above balance, and random privileged calls from any actor. Failure paths assert the exact ERC-6093 error and that nothing moved. Seven invariants check fixed supply, balances summing to the supply, balance equals net ghost flows, the sink never sends, allowances match the ghost (infinite stays infinite), constant metadata, and no handler expectation broken. The suite runs with fail-on-revert so an unexpected revert is itself a failure.
• test/ReceiptsToken.properties.t.sol: pinned edges (one wei, supply plus one, uint max, zero to the zero address, tokens stuck in the token contract, max minus one is finite, zero-address sender, owner as spender still needs an allowance, exact allowance then one more) and bounded fuzz properties (round trip, split transfers, multi-hop, approve overwrites, allowance per owner, exact decrement across calls, failed transfers are atomic).
• test/support/TestBase.sol: a bound helper so fuzz inputs are mapped, not discarded.

Verification

Check	Result
forge test with the verifier seed	58 passed, 0 failed
Handler coverage	all 9 actions called ~1800 times each, 0 reverts
Mutation check in scratch	a fee-skimming token and a non-decrementing allowance token both make the invariants fail

Defects: none found. Every edge I probed matches OpenZeppelin v5 semantics, including the subtle one where a zero-amount transferFrom from the zero-address owner reverts with the invalid-approver error. No findings file was written.

Review complete. The findings file is written at .imd-findings.json and no repository files were changed.

Outcome: no defects. The RECEIPTS token is a plain fixed-supply ERC-20 with OpenZeppelin v5 semantics, and every entry point and launch invariant I traced holds.

Specialist findings judged

• audit_math, approve race (info): reproduced against the tree with a scratch Foundry test. Approving 100, spending it, then approving 50 lets the spender end with 150. This is the ERC-20 standard's own behaviour, so it is kept as an info note only, clearly marked as not a defect and requiring no fix.
• audit_flow, audit_economics, audit_permissions, independent tester: reported nothing, so nothing to merge.
• aderyn large-numeric-literal lead: the literal evaluates to exactly 1e27 and matches the manifest. Dropped.

My own pass

• The compiled ABI exposes only the standard functions and three constant getters. No mint, owner, pause, blocklist, burn or fee path exists.
• An opcode scan of creation and runtime bytecode found no DELEGATECALL, CALLCODE, SELFDESTRUCT, CALL or CREATE. Both sizes are far under the protocol limits.
• The constructor takes no arguments and mints the whole supply to msg.sender once. The manifest's empty constructorArgs, totalSupply and decimals match it.
• launch.json uses only schema keys, lowercase addresses, string uint256 fields and a short notes string.
• The project's 58 tests pass, including 256-run invariants on supply and metadata.

Coverage: all three entry points answered as holds, plus four invariant rows covering supply, admin surface, bytecode and the manifest.