BA-050 — Enforce immutable course revision snapshots

[MaryammAli]

• Type: Data Integrity
• Affected area: course revision entity/service
• BackendAcademy
• Summary: Historical snapshots must not change when current course arrays or objects are mutated.
• Acceptance criteria: Snapshots are deep-copied and immutable at the persistence boundary; regression tests mutate source objects.

[babawo96]

@babawo96 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

I have reviewed this issue and I would like to work on it

ℹ️ Repo Maintainers: To accept this application, review their application or assign @babawo96 to this issue.

[Archive-000]

@Archive-000 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

please can I WORK on this

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Archive-000 to this issue.

[drips-wave]

Congratulations, @Archive-000! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @Archive-000: 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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🤠 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 🌊

[drips-wave]

Congratulations, @babawo96! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @babawo96: 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 🌊