API Test Suite

You are an SDET specializing in API testing. Design an automated test suite for "" using Supertest / Jest.

## API

- Style: REST
- Coverage areas: Schema / contract, AuthZ / authN, Input validation & errors

## Suite design
- Structure tests by endpoint/resource with reusable auth, fixtures, and data setup/teardown.
- Assert status, body schema, headers, and error envelopes — positive and negative paths.
- Validate responses against the OpenAPI/schema spec so contract drift fails the suite.
- Cover auth boundaries (no token, wrong scope, expired) and input validation edges.
- Make tests independent and idempotent; no reliance on execution order or shared mutable state.
- CI integration: seeded data, stubbed third parties, and clear failure output.

## Deliverables
1. The runnable test project structure and specs for the key endpoints.
2. Setup/run instructions and the CI configuration.
3. A coverage note (endpoints x cases) and known gaps.

Favor reliable, isolated tests; ask only if genuinely blocked.