Add tests for `claim_default` + `appeal_default` score restoration

[Levi-Ojukwu]

Description:

The appeal flow needs tests for score restoration logic.

Why it matters: Incorrect score restoration could permanently damage payer reputation.

Acceptance Criteria:

• Test payer score is saved before default
• Test appeal upheld restores score
• Test appeal rejected preserves penalty
• Test appeal window expiration

Relevant Files: contracts/invoice_liquidity/src/tests_appeal.rs

---

[TechBroAfrica]

Focused on building trust through consistent, meaningful contributions. I approach every issue with curiosity, attention to detail, and a commitment to delivering clean, maintainable, and well-tested solutions. Driven by impact, not just commits, I value clear communication, effective collaboration with maintainers, continuous learning, and delivering meaningful value to every project I contribute to.

[MoscowDev]

I'd be happy to take this issue on. I have experience building production-ready applications and collaborating effectively through GitHub workflows, including implementing features, resolving bugs, and submitting well-documented pull requests.

I'll carefully review the existing implementation, identify the root cause, and deliver a robust, maintainable solution that aligns with the project's architecture and coding standards. Before submitting my PR, I'll thoroughly test the changes to ensure reliability and avoid regressions.

My goal is to contribute high-quality, clean, and maintainable code while communicating clearly throughout the process and delivering a dependable solution in a timely manner.

[MoscowDev]

I'd be happy to take this issue on. I have experience building production-ready applications and collaborating effectively through GitHub workflows, including implementing features, resolving bugs, and submitting well-documented pull requests.

I'll carefully review the existing implementation, identify the root cause, and deliver a robust, maintainable solution that aligns with the project's architecture and coding standards. Before submitting my PR, I'll thoroughly test the changes to ensure reliability and avoid regressions.

My goal is to contribute high-quality, clean, and maintainable code while communicating clearly throughout the process and delivering a dependable solution in a timely manner.

[KorexOnchain]

@KorexOnchain has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

i would love to get on this

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

[stephanieoghenemega-eng]

@stephanieoghenemega-eng has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

hello maintainer, kindly assign these issues to me. Thank you

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

[drips-wave]

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

🧑‍💻 @stephanieoghenemega-eng: 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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[drips-wave]

This issue has been completed by @stephanieoghenemega-eng as part of the Stellar Wave Program's 7th Wave 🥳

😎 @stephanieoghenemega-eng: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

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