Fix TransactionBuilderError/EvaluationError in mint.ts and PlutusV2/V3 mismatch in nft.ts

[Copilot]

Two bugs introduced during the migration from @lucid-evolution/lucid to @evolution-sdk/evolution and the Aiken v1.0.29-alpha → v1.1.21 upgrade that caused token minting to fail with TransactionBuilderError caused by EvaluationError.

mint.ts: OverlappingAdditionalUtxo → EvaluationError

build() calls lacked availableUtxos, so the SDK fetched on-chain wallet UTxOs from Blockfrost for coin selection. With passAdditionalUtxos: true on the mint tx, those on-chain UTxOs were forwarded to Blockfrost's /utils/txs/evaluate/utxos endpoint as additionalUtxoSet. Since they already exist in Blockfrost's chain database, Blockfrost rejected the request with OverlappingAdditionalUtxo.

Fix: explicitly pass availableUtxos from the simulated chain state to each build() call so coin selection only touches off-chain UTxOs.

Additionally, ref is excluded from the deploy tx's available UTxOs to prevent it from being consumed before the mint tx needs it:

// Before — newTx() arg is ignored by the SDK; availableUtxos not passed to build()
const deployResult = await client
  .newTx(setupUtxos)                          // ← ignored
  .payToAddress({ ... })
  .build({ changeAddress });                  // ← fetches on-chain UTxOs

const mintResult = await client
  .newTx(deployChain.available)               // ← ignored
  .mintAssets({ ... })
  .build({ changeAddress, passAdditionalUtxos: true }); // ← passes on-chain UTxOs to evaluator

// After
const deployUtxos = setupUtxos.filter(
  (u) =>
    TransactionHash.toHex(u.transactionId) !== TransactionHash.toHex(ref.transactionId) ||
    u.index !== ref.index
);
const deployResult = await client
  .newTx()
  .payToAddress({ ... })
  .build({ changeAddress, availableUtxos: deployUtxos });

const mintResult = await client
  .newTx()
  .mintAssets({ ... })
  .build({ changeAddress, availableUtxos: deployChain.available, passAdditionalUtxos: true });

nft.ts: PlutusV2 used for a PlutusV3 validator

nft.ts used PlutusV2 for both createScript and createBlackholeAddress, but multiple.ak compiles to Plutus V3. This is the same mismatch PR #25 fixed in mint.ts. All three PlutusV2 references replaced with PlutusV3.

---

🔒 GitHub Advanced Security automatically protects Copilot coding agent pull requests. You can protect all pull requests by enabling Advanced Security for your repositories. Learn more about Advanced Security.