Backend: Review comments and decision history API

[Cedarich]

Complexity: 150 points

Goal
Persist reviewer comments and decision history so frontend and mobile review tools can show complete submission context.

Acceptance Criteria

• Review records support comments plus decision metadata.
• History can be fetched by submission or target entity.
• Sensitive internal notes are safely scoped.
• API responses are ready for reviewer timeline UIs.

[Ekpemark]

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

Hi maintainer can I work on this issue?

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

[1sraeliteX]

@1sraeliteX has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I would like to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @1sraeliteX to this issue.

[drips-wave]

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

🧑‍💻 @Ekpemark: 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 🌊