[Contracts] Implement Claim Timelock and Disputes Grace Window

[ONEONUORA]

Description

Implement a disputes holding window:

• When payout is triggered, tokens go into a holding lock instead of being disbursed immediately.
• If owner wakes up or disputes during the lock period, they can cancel the payout.

Acceptance Criteria

• Lock duration is configurable.
• Allows cancel/reclaim from owner address during lock.
• Payout executes automatically or via pull after lock expires.

[dubemoyibe-star]

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

I'd be interested in working on this.

I can implement the claim timelock and dispute window so that payouts enter a temporary holding period before any funds are released. During this window, the owner will be able to dispute or reclaim the payout, preventing the transfer from being completed.

The lock duration will remain configurable, and I'll ensure the payout can be finalized once the grace period expires, either automatically or through a pull-based claim flow. I'll also add the necessary tests to cover the dispute, cancellation, and successful payout scenarios.

If this issue is still open, I'd be happy to take it on.

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

[Dopezapha]

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

Hey maintainer, I would love to work on this issue. I have years of experience as a software engineer and smart contract developer, and I'm confident I can implement everything required here. Kindly assign it to me so I can begin working immediately.

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

[drips-wave]

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

🧑‍💻 @Dopezapha: 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

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[grantfox-oss]

🦊 GrantFox — @Dopezapha has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #841)
2. Your PR will be reviewed by the Fracverse maintainers

Good luck! Track your progress on GrantFox.

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Official Campaign campaign!

@Dopezapha's PR #873 was approved and merged by @ONEONUORA.

🏆 @Dopezapha: You earned 40 FoxPoints for this contribution! Your current tier: Builder (2,051 total points). Track your full progress on GrantFox.

👏 Great work, @Dopezapha! Keep contributing to Fracverse.