[Feature] Implement proof expiration and renewal system

[jobbykings]

Description

Add time-based proof expiration with automatic renewal notifications and grace periods.

Requirements

• Proof expiration dates
• Automated renewal reminders
• Grace period handling
• Renewal workflow
• Expiration analytics
• Bulk renewal options
• Expiration notifications

Acceptance Criteria

• GIVEN proof expiration, WHEN reached, THEN proof becomes invalid
• GIVEN renewal reminder, WHEN triggered, THEN user receives notification
• GIVEN grace period, WHEN active, THEN proof remains temporarily valid
• GIVEN renewal workflow, WHEN initiated, THEN process is streamlined
• GIVEN expiration analytics, WHEN viewed, THEN insights are provided

Files to Work On

Backend:

• src/services/expirationService.ts
• src/services/renewalService.ts
• src/services/notificationService.ts
• src/controllers/expirationController.ts
• src/models/ProofExpiration.ts
• src/models/Renewal.ts

Smart Contracts:

• contracts/src/proofExpiration.rs

Frontend:

• src/components/Expiration/RenewalDashboard.tsx
• src/components/Expiration/ExpirationAlert.tsx
• src/components/Expiration/BulkRenewal.tsx

Definition of Done

• Proof expiration works reliably
• Renewal reminders are timely
• Grace period prevents service disruption
• Renewal workflow is user-friendly
• Expiration analytics provide insights
• Bulk renewal handles multiple proofs
• Notifications reach users effectively
• All expiration features are tested

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This issue has been added to the Stellar Wave Program and is worth 200 Points.

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[Nathydre]

@Nathydre has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

would love to work on this issue

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

[drips-wave]

Congratulations, @Nathydre! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @Nathydre: 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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