**Bug: challenge hints are exposed before the learner reaches the threshold**

[MaryammAli]

• Description: Hint access rules can be bypassed or applied inconsistently, undermining the intended difficulty progression.
  • Impacted files: BackendAcademy/src/challenges/challenges.service.ts, BackendAcademy/src/submissions/submissions.service.ts, BackendAcademy/src/users/users.service.ts, BackendAcademy/src/monitoring/metrics.service.ts

[bibi-fay]

@bibi-fay has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi Maintainer,

Can I pick this up?

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[drips-wave]

Congratulations, @bibi-fay! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @bibi-fay: 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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[drips-wave]

This issue has been completed by @bibi-fay as part of the Stellar Wave Program's 7th Wave 🥳

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