Bound appraisal payment error diagnostics

[karagozemin]

Goal\nPrevent oversized or sensitive paid-response bodies from being copied into client errors.\n\n## Acceptance criteria\n- Cap diagnostic text to a documented length.\n- Redact common credential fields.\n- Add tests for large and secret-bearing bodies.\n\n## Wave complexity (maintainer)\nHigh - 200 points

[Joseph-tech10]

@Joseph-tech10 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hi maintainer, I have reviewed this and I will like you to assign this to me

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Joseph-tech10 to this issue.

[Oluwasuyi-Oluwatimilehin-Daniel]

@Oluwasuyi-Oluwatimilehin-Daniel has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hello @maintainer, I’d like to work on this issue. I have experience handling similar tasks and can start immediately. And I will deliver at the shortest possible time.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Oluwasuyi-Oluwatimilehin-Daniel to this issue.

[drips-wave]

Congratulations, @Joseph-tech10! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @Joseph-tech10: 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 🌊

[Joseph-tech10]

Implemented and opened PR #306: https://github.com/Sub-Rosa-Issue/sub-rosa-issue/pull/306\n\n@karagozemin please review the documented implementation and run CI.