[BE-032] Create yield reports notification scheduler

[ONEONUORA]

Description

Build a scheduler that fires daily/weekly push notifications summarizing interest earned.

Files to Edit/Create

• backend/src/services/notifications.rs (new file)

Acceptance Criteria

• Select users with positive earnings balance.
• Trigger notification if earned yield is above threshold.

Guidance / Hints

Interface with Expo Push Notifications API to send alerts.

[alexitsejames-cpu]

@alexitsejames-cpu has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi can you please assign these issue to me

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[josephchimebuka]

@josephchimebuka has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi GM, I have reviewed this issue and taken the time to understand the requirements, current implementation, and the expected outcome. Based on my analysis, I believe this is something I can successfully handle and contribute to... Kindly assign

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

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[josephchimebuka]

Implemented in #426 — will close this issue when merged.

[drips-wave]

This issue has been completed by @josephchimebuka as part of the Stellar Wave Program's 6th Wave 🥳

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