whatsapp

## Summary
Short goal (why it’s useful).

## Contexts
More details on issue

## Tasks
- [ ] Task 1
- [ ] Task 2
- [ ] Task 3

## Acceptance Criteria
- [ ] Behavior X works
- [ ] Tests added
- [ ] docs updated (if needed)

## Area
`backend` / `mobile` / `web` / `shared`

## Difficulty
