Implement IP Commitment Expiry with Grace Period

[fejilaup-cloud]

Description

IP commitments should have an expiry, but inventors should have a grace period to renew before permanent deletion. This prevents accidental loss of IP records.

Tasks

• Add expiry_timestamp: u64 and grace_period_seconds: u64 to IpRecord
• Implement renew_ip_commitment(env, ip_id, new_expiry) -> bool — owner-only
• Implement cleanup_expired_ips(env) — anyone can call to remove expired IPs after grace period
• Add tests for expiry, grace period, and cleanup
• Emit events for renewal and cleanup

Priority: Medium | Estimated Time: 2 hours

[ScriptedBro]

@ScriptedBro has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi, I’d like to take this issue.
I will extend IpRecord with expiry_timestamp and grace_period_seconds, then implement secure owner-only renewal via renew_ip_commitment. I will also add cleanup_expired_ips to safely remove records only after the grace period has fully elapsed.
I will emit events for both renewal and cleanup operations, and include comprehensive tests covering expiry handling, grace-period protection, unauthorized renewal attempts, and cleanup edge cases.

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

[levi0005]

@levi0005 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi maintainer i would like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @levi0005 to this issue.

[drips-wave]

Congratulations, @levi0005! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @levi0005: 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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