[medium] Add ETL cleanup for stale policy_executions rows

[davedumto]

Summary

policy_executions accumulates rows for long-completed executions with no archival or cleanup process.

Requirements

• Add a scheduled job archiving or deleting rows past a defined age
• Make the archival destination and age threshold configurable
• Add a test verifying only eligible rows are affected
• Document the cleanup schedule in the service README

[Joeljosef7]

@Joeljosef7 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

I'd like to claim this issue. I can add a scheduled cleanup job for stale "policy_executions" rows, with configurable retention age and archival/deletion behavior.

I'll add tests to ensure only eligible rows are affected and document the cleanup schedule and configuration in the service README.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Joeljosef7 to this issue.

[Jumongweb]

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

Hi maintainer, i will like to solve this issue

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

[veloura-dev]

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

Please maintainer assign this issue to me and have it resolved ASAP 🙏

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

[Nuelthewave]

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

Hi Maintainer! i can easily resolve this issue. i would appreciate if i'm appointed to work on it.

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

[drips-wave]

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

🧑‍💻 @Nuelthewave: 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.

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