Implement campaign suspension by admin

[ayshadogo]

User Story:
As an admin, I want to suspend campaigns that violate platform policies so that harmful content is removed.
Acceptance Criteria:

• POST /admin/campaigns/:id/suspend sets status to SUSPENDED
• Requires ADMIN role
• Accepts { reason: string } body
• Email notification sent to creator
• Suspension logged in AuditLog

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[Johnpii1]

@Johnpii1 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hello Sir,

I recently came across your project and I’m very interested in contributing to the team.

I have experience working with React to build responsive and user-friendly interfaces, and I also have a solid understanding of smart contracts and blockchain fundamentals. I enjoy writing clean, scalable code and focusing on improving overall user experience.

I’m a fast learner, highly motivated, and available to get started immediately. I would appreciate the opportunity to contribute and would be glad to discuss the next steps.

Thank you for your time and consideration. I look forward to hearing from you.

Best regards,
Johnpaul

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Johnpii1 to this issue.

[feyishola]

@feyishola has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hi im Feyishola a software developer with over 4 years of experience. Please let me handle this issue

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

[drips-wave]

Congratulations, @feyishola! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @feyishola: 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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