[TASK] Implement receipt creation from invoice test - Invoice-to-Payment Workflow

[africanitem]

Task Details

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

Dependencies

• Depends on: [TASK] Create receipt operation helpers - Invoice-to-Payment Workflow #514
• Depends on: [TASK] Implement invoice posting test - Invoice-to-Payment Workflow #516

Success Criteria

• Test creates receipt linked to invoice, verifies invoice-receipt relationship