Add Polling Progress Logging

[Abd-Standard]

Description

Improve listener observability when processing large event ranges by reporting meaningful synchronization progress.

Acceptance Criteria
Large synchronization operations report progress.
Logs identify the relevant range.
Logging does not expose secrets.
Excessive log noise is avoided.

[Jessepriase]

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

i would like to work on this issue

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

[drips-wave]

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

🧑‍💻 @Jessepriase: 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 🌊

[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox!

@Jessepriase's PR #672 was approved and merged by @Abd-Standard.

🏆 @Jessepriase: You earned 35 FoxPoints for this contribution! Your current tier: Explorer (494 total points). Track your full progress on GrantFox.

👏 Great work, @Jessepriase! Keep contributing to Core-Foundry.