Add a telemetry privacy opt-out mechanism and documentation

[Nanle-code]

If telemetry is enabled, document exactly what data is collected and provide a starforge config set telemetry false option or equivalent environment variable. Ensure the telemetry setting is easy to find and respects privacy-first usage.

[fathiaoyinloye]

@fathiaoyinloye has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I'm a software engineer and I'd love to work on this issue. Could you assign it to me?

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

[KarenZita01]

@KarenZita01 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I would love to take on this issue. I’ve reviewed the event ingestion logic. I have quite an experience with Rust, Soroban smart contracts and some other programming languages.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @KarenZita01 to this issue.

[drips-wave]

Congratulations, @fathiaoyinloye! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @fathiaoyinloye: 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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