Routes API Tests

[benhuangbmj]

Task

Implement end-to-end testing setup and basic coverage:

1. Install Jest and Supertest as devDependencies.
2. Add a health check API endpoint (e.g., GET /api/health) to return application health status { status: 'ok' }.
3. Write an automated test with Jest/Supertest to verify the health endpoint returns a successful response.
4. Confirm tests run successfully via npm test.

Acceptance Criteria:

• App exposes a /api/health endpoint that returns health status.
• Project is configured for Jest and Supertest and contains its first passing E2E test.

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This is the first step toward feature-parity API endpoint test coverage.

[gent1999]

Write automated tests for all Votte route endpoints to verify expected behavior, validation, and error handling.

[wilrnh]

@gent1999 @benhuangbmj @AaronNewTech I've updated the description best I can, but feel free to add to it 🙏

@rayaMooo000 plz let us know if you have any questions along the way. Happy learning!