Improve Secret Management

[Abd-Standard]

Description
Ensure sensitive credentials are securely managed using environment variables or a secret management solution. Remove any hardcoded secrets.

Acceptance Criteria
No secrets exist in source code.
Environment variables are documented.
Security review passes.

[Tobi-8]

@Tobi-8 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Please maintainer assign me to this issue
I have the knowledge and skill to complete this task

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Tobi-8 to this issue.

[Osuochasam]

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

Dear maintainer, pls assign me this issue

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

[drips-wave]

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

🧑‍💻 @Osuochasam: 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!

@Osuochasam's PR #533 was approved and merged by @Abd-Standard.

🏆 @Osuochasam: You earned 40 FoxPoints for this contribution! Your current tier: Builder (1,089 total points). Track your full progress on GrantFox.

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