Policy import/export with validation and diff preview

[karagozemin]

Stellar Wave #6 — Apply via the Stellar Wave Program on Drips. Use the Wave application flow. Maintainers review applicants on the Drips maintainer dashboard.
Wave window: 2026-06-23 09:00 UTC → 2026-06-30 09:00 UTC.

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Summary

Allow operators to export the active policy as JSON and import a new policy through the policy editor with schema validation and a diff preview before saving.

Context

• Policy UI: src/components/policy-editor.tsx
• Policy APIs: src/app/api/policy/route.ts, src/app/api/policy/history/route.ts
• Schema: src/lib/validation/schemas.ts
• Diff helpers already exist near the policy editor history UI.

Acceptance criteria

• Add an export action that downloads the current policy JSON
• Add an import control that accepts JSON and validates it with policyConfigSchema
• Show a human-readable diff before the imported policy is saved
• Invalid JSON/schema errors are displayed without mutating current policy
• Viewer role can export but cannot import/save
• Tests cover schema validation and import failure handling where practical
• README policy section documents import/export usage
• npm test and npm run lint pass
• PR links to this issue

Notes

Keep the existing manual editor. Import/export should augment it, not replace it.

Evidence submission

## Policy import/export — Evidence

**Contributor:** @handle | **PR:** #___

- [ ] Exported policy re-imports successfully
- [ ] Invalid policy is rejected before save
- [ ] Diff preview shown before save
- [ ] Viewer cannot mutate policy

Wave complexity (maintainer)

Medium — 150 points

[abdulqoyumadegoke]

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

I would like to work on this task, kindly assign it to me

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

[believetimothy]

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

Hello Maintainer, I can fix this issue.

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

[drips-wave]

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

🧑‍💻 @abdulqoyumadegoke: 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 🌊

[BernardOnuh]

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

Hello @maintainer, I’ve gone through the requirements and I’m confident I can implement a proper solution that matches the acceptance criteria. Kindly assign this issue to me. And I will deliver at the shortest possible time.

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

[drips-wave]

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

🧑‍💻 @BernardOnuh: 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 🌊