Backend webhook receiver for external systems

[aji70]

Description (Backend)
Add signed webhook endpoint for integrations.

Tasks

• Implement signature verification
• Add event processing queue
• Add tests

Additional Requirements

• Retry failed events with DLQ

Acceptance Criteria

• Valid webhooks are processed
• Invalid signatures rejected

[chidinma000]

@chidinma000 has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

please can i work on this

ℹ️ Repo Maintainers: To accept this application, review their application or assign @chidinma000 to this issue.

[drips-wave]

Congratulations, @chidinma000! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on March 30, 2026.

🧑‍💻 @chidinma000: 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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