[TASK] Implement quotation-to-invoice conversion test - Quotation-to-Invoice Workflow

[africanitem]

Task Details

Epic: #523 [EPIC] Quotation-to-Invoice Workflow E2E Tests

Dependencies

• Depends on: [TASK] Implement quotation creation test - Quotation-to-Invoice Workflow #525
• Depends on: Epic [EPIC] Invoice-to-Payment Workflow E2E Tests #512

Success Criteria

• Test converts quotation to invoice, verifies items transfer correctly