[TESTING] Write API integration tests for vaccination endpoints

[dev-fatima-24]

Priority: critical

Description

The vaccination issue and fetch endpoints need integration tests with mocked Soroban RPC calls to verify the full request/response cycle.

Acceptance Criteria

• Test: POST /v1/vaccination/issue with issuer JWT and valid body returns 201
• Test: POST /v1/vaccination/issue with patient JWT returns 403
• Test: POST /v1/vaccination/issue with duplicate record returns 409
• Test: GET /v1/vaccination/:wallet with valid JWT returns records array
• Test: GET /v1/vaccination/:wallet with invalid wallet format returns 400

[jaymhorsh]

@jaymhorsh has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Kindly assign I have ETC of 2-3, confident im the best fit to resolve this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @jaymhorsh to this issue.

[Praizfotos]

@Praizfotos has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

hello i'd love too work on this

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Praizfotos to this issue.

[drips-wave]

Congratulations, @Praizfotos! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @Praizfotos: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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