Add bank selector dropdown and SWIFT/BIC registry

- Added Bank type and BankRegistry interface
- Created banks service with CRUD operations
- Added bank dropdown to Transactions page
- Integrated ESTRBRRJ (strategy INVESTIMENTOS S/A CVC) as default
- Added SWIFT code validation
- Added unit tests for bank registry
- Extended Transaction type with bankSwiftCode field

apps/web/src/pages/TransactionsPage.tsx

@@ -32,8 +32,11 @@ export default function TransactionsPage() {
     },
   });
   const [errors, setErrors] = useState<Record<string, string>>({});
+  const [selectedBankSwiftCode, setSelectedBankSwiftCode] = useState<string>('ESTRBRRJ');
 
   const converter = getDefaultConverter();
+  const banks = getAllBanks();
+  const selectedBank = getBankBySwiftCode(selectedBankSwiftCode);
 
   const handleSubmit = useCallback(async (e: React.FormEvent) => {
     e.preventDefault();
@@ -137,6 +140,7 @@ export default function TransactionsPage() {
         },
         purposeOfPayment: sanitizeString(formData.purposeOfPayment || ''),
         fxContractId: formData.fxContractId,
+        bankSwiftCode: selectedBankSwiftCode,
         status: 'pending',
         createdAt: new Date(),
         updatedAt: new Date(),