Include Timestamp for Reviews

[Naomi-Gift]

Description:

Record the submission timestamp for each review. This allows sorting reviews chronologically and auditing review activity.

Expected Behavior:

Timestamp is recorded automatically at the time of submission.

Updates or deletions update associated timestamps accordingly.

Implementation Notes:

Use block timestamp for consistency.

Ensure immutable history for auditing purposes.

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[Olowodarey]

@Olowodarey has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

Hello, I’m Darey Olowo, a frontend and smart contract developer with experience building and shipping reliable features. I’d like to take on this issue and will implement the Timestamp for reviews will be done within 12 hours

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

[Amas-01]

@Amas-01 has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I’m keen to work on #18 Include Timestamp for Reviews.
Happy to build clean, auditable timestamp support in the Dongle smart contract: add a timestamp field (u64, using block timestamp via env.ledger().timestamp()) to each review struct/entry, automatically set it on creation/submission, update the timestamp on any allowed edits (if updates are permitted), handle deletions gracefully (e.g., soft-delete with archived timestamp or full removal with event logging), ensure timestamps are immutable where required for audit trails, emit events with timestamps for off-chain indexing/sorting, add getter functions or queries to fetch reviews sorted by timestamp (or return with timestamp for frontend sorting), include comprehensive tests verifying: correct auto-timestamp on submit, no tampering possible, chronological ordering works, update/delete timestamp behavior matches expected, edge cases (genesis block time, multiple reviews in same block, etc.) — delivering reliable, Soroban-native chronological review tracking as described.
Excited to make review history verifiable and sortable in HubDApp/Dongle-Smartcontract for better transparency and user experience!
Please assign me this issue.

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Congratulations, @Amas-01! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @Amas-01: 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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