BA-109 — Validate and observe cron schedules

[MaryammAli]

• Type: Operations
• Affected area: src/jobs/, config, readme
• BackendAcademy
• Summary: Cron settings need startup validation, timezone policy, and visibility into next and last execution.
• Acceptance criteria: Invalid schedules fail or are disabled according to policy; schedule status includes timezone and execution outcome.

[supreme2580]

@supreme2580 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

Hello maintainer, can I be assigned to this issue?

ℹ️ Repo Maintainers: To accept this application, review their application or assign @supreme2580 to this issue.

[Senia-Lovo]

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

Hi Maintainer please I will like to work on this issue

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[m-hajjo]

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

I have read the requirements of this issue and i am confident that i can solve this

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

[drips-wave]

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

🧑‍💻 @m-hajjo: 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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[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox as part of the Third Campaign campaign!

@m-hajjo's PR #742 was approved and merged by @MaryammAli.

🏆 @m-hajjo: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (802 total points). Track your full progress on GrantFox.

👏 Great work, @m-hajjo! Keep contributing to BlockDash-Studios.

[drips-wave]

This issue has been completed by @m-hajjo as part of the Stellar Wave Program's 8th Wave 🥳

😎 @m-hajjo: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

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