Recurring & scheduled FX rate alerts

[therealjhay]

ProblemrateAlertStore holds alerts in memory only (flagged as a bug); this feature adds backend-backed alerts with delivery.

Solution

• Add /api/rate-alerts CRUD and persist alerts server-side per merchant.
• Deliver triggered alerts via email/webhook/in-app notification (feature Add useCallback for event handlers in dashboard and settings #38) with dedupe.
• Add alert condition UI (above/below, one-time/recurring, time window).
• Reconcile the client rateAlertStore with the server list on boot.

Acceptance Criteria

• Alerts survive reload and are restored from the backend.
• A triggered alert delivers via the chosen channel once.
• One-time alerts deactivate after firing.
• npm run build passes.

Note for Contributors: Write a clear PR description. Set an alert, trigger it, and show delivery.

[Peculiarr7]

Hi! I came across this issue and would love to work on it. I have experience with similar tasks and I'm confident I can investigate, implement a clean solution, and thoroughly test it before submitting a PR. If the issue is still open, I would appreciate it if you could assign it to me. I’ll prioritize this immediately and ensure a reliable solution is delivered as soon as possible. Thank you!

[payfoxX]

@payfoxX has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

I love to fix this issue, kindly assign it to me. Thanks

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

[stephanieoghenemega-eng]

@stephanieoghenemega-eng has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

hello, kkindly assign

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

[drips-wave]

Congratulations, @stephanieoghenemega-eng! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @stephanieoghenemega-eng: 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.

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