[TASK] Create receipt operation helpers - Invoice-to-Payment Workflow

[africanitem]

Task Details

Epic: #512 [EPIC] Invoice-to-Payment Workflow E2E Tests

Dependencies

• Depends on: [TASK] Create invoice operation helpers - Invoice-to-Payment Workflow #513

Success Criteria

• Helper functions in e2e/helpers/receipt-helpers.ts
• createTestReceipt() using pattern: RCP-${Date.now()}
• recordPayment(), verifyPaymentStatus()
• Functions link receipts to invoices