[Feature] Add in-app wallet activity notification centre

[kelly-musk]

Problem

There is no in-app notification system for wallet events:

• Incoming Stellar payment received
• Onramp order status change
• Offramp settlement completed
• Price alert triggered
• KYC status update

Fix

1. Add a notifications dropdown to the dashboard header
2. Store notifications in the database (unread count, mark-as-read)
3. Poll for new notifications or use SSE for real-time delivery
4. Optionally subscribe to Stellar account events via Horizon streaming API
5. Trigger push notifications for high-priority events (funds received)

Impact

Medium UX — users have no awareness of account activity.

[BigElv]

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

Hi maintainer! I’d love to work on this issue if it’s still available. I have a good understanding of the requirements and would be happy to implement the solution. Thanks for considering my request!

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

[paulddeveloper-droid]

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

I count it as a privilege and opportunity to work on this issue. Please assign.

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

[drips-wave]

Congratulations, @paulddeveloper-droid! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

🧑‍💻 @paulddeveloper-droid: 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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