Fix ReputationSnapshot snapshot ID collisions (block.timestamp is not unique)

[dDevAhmed]

• Fix: Add cancelProposal function.
• Complexity: Medium

[Chisl0n]

@Chisl0n has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

I enjoy fixing data integrity issues; I’ve implemented unique ID counters and prevented collision bugs in smart contract state management.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Chisl0n to this issue.

[OlufunbiIK]

@OlufunbiIK has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Hi Maintainer,

Can I work on this issue?

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

[drips-wave]

Congratulations, @OlufunbiIK! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

🧑‍💻 @OlufunbiIK: 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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