Montants et précision

// ✅ Correct
{ "amountRequested": "100.50" }
{ "amount": "0.123456789012345678" }

// ❌ Faux — précision perdue
{ "amountRequested": 100.50 }
{ "amount": 0.1 + 0.2 }  // = 0.30000000000000004

import Decimal from 'decimal.js';

const amount = new Decimal(intent.amountCryptoExpected);
const display = amount.toFixed(intent.assetCode === 'BTC' ? 8 : 2);
// "0.12345678" ou "100.50"

new Intl.NumberFormat('fr-FR', {
  style: 'currency',
  currency: intent.currencyRequested,
}).format(new Decimal(intent.amountRequested).toNumber());