feat: payment approval

[jannisvisser]

AB#37510

Describe your changes

• WIP
• Backend only
• e2e tests are expected to fail because no front-end implemented
• all other tests pass

Checklist before requesting a code review

• I have performed a self-review of my code (and addressed any Copilot comments)
• I have added tests for my changes, or: Adding tests is unnecessary/irrelevant
• I have asked the design team to review these changes, or: The changes do not touch the UI/UX
• I have made sure that all automated checks pass before requesting a review
• I do not need any deviation from our PR guidelines
• I have updated all documentation where necessary

Portal preview-deployment

https://happy-rock-0411d2003-7676.westeurope.3.azurestaticapps.net

[Copilot]

Pull request overview

This PR introduces a backend payment approval workflow, allowing payments to be approved by designated approvers before execution. The changes add multi-step payment processing: create → approve → start, replacing the previous single-step approach.

Key Changes:

• New approver management system with CRUD endpoints for assigning users as payment approvers
• Payment approval flow requiring all designated approvers to approve before payment execution
• Refactored test helper from createAndStartPayment to doPayment to include the new approval step
• Database migration adding approver and payment_approval entities

Reviewed changes

Copilot reviewed 48 out of 48 changed files in this pull request and generated 24 comments.

Show a summary per file

File	Description
services/121-service/src/user/approver/entities/approver.entity.ts	New entity linking users to program-level approver role with ordering
services/121-service/src/user/approver/entities/payment-approval.entity.ts	New entity tracking individual approvals for each payment
services/121-service/src/user/approver/approver.service.ts	Service for managing approvers (CRUD operations)
services/121-service/src/user/approver/approver.controller.ts	REST endpoints for approver management
services/121-service/src/user/approver/dto/*.ts	DTOs for approver creation, updates, and responses
services/121-service/src/payments/entities/payment.entity.ts	Added one-to-many relation to payment approvals
services/121-service/src/payments/services/payments-creation.service.ts	Added approval logic requiring all approvers to approve before transactions are marked as approved
services/121-service/src/payments/services/payments-execution.service.ts	Updated to process approved (not pending approval) transactions
services/121-service/src/payments/payments.controller.ts	Added POST endpoint for approving payments
services/121-service/test/helpers/program.helper.ts	Renamed createAndStartPayment to doPayment, added approval step
services/121-service/test/payment/payment-approval.test.ts	Added basic integration test for approval workflow
services/121-service/test/users/manage-approvers.test.ts	New test for approver CRUD operations
services/121-service/src/migration/1766058193913-approvers.ts	Database migration creating approver and payment_approval tables
All other test files	Updated to use renamed doPayment helper function