UnyKorn Stablecoins: published security tests (Foundry, solc 0.8.24)

Layout as served:
  /contracts/*.sol            current reference sources
  /contracts/archive/*.sol    originals as first published 17 Sep 2026 (hashes unchanged)
  /contracts/tests/*.t.sol    these tests

To run: download /contracts (including archive/ and tests/) into a folder, add forge-std under lib/,
and use this foundry.toml:

  [profile.default]
  src = "contracts"
  test = "contracts/tests"
  libs = ["lib"]
  solc_version = "0.8.24"
  remappings = ["forge-std/=lib/forge-std/src/"]
  skip = ["contracts/archive/HolyGrailStablecoin.v1-2026-09-17.sol", "contracts/archive/InstitutionalSettlementDollar.v1-2026-09-17.sol"]

(The two skipped originals are archived byte-for-byte: the HolyGrail original does not compile and the
ISD original imports a sibling file. QuantumShieldedDollarV1Exploits.t.sol shows the attacks that worked
against the original QuantumShieldedDollar.)

Expected: 51 tests pass (47 security tests on the current sources + 4 exploit reproductions on the original).
These tests are ours; they are not an audit.