Add a template cache expiration mechanism

[Nanle-code]

Implement cache expiration for local template registry data, using timestamps or TTL values. If a cached registry entry is stale, automatically refresh from the remote source while preserving offline fallback behavior when the network is unavailable. This improves search accuracy without forcing users to manually refresh.

[benedictworks-home]

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

I would like to work on this issue

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

[centboy123]

@centboy123 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Hey my name is @Centboy I would like to work on this issue because optimizing system performance and ensuring efficient resource management are core areas of interest for me as a developer. Implementing a template cache expiration mechanism is crucial for preventing memory bloat and ensuring users always receive fresh, updated data without sacrificing speed. I enjoy working on low level backend optimizations and structured state logic, making this task a perfect

My technical background has trained me to approach development with an analytical mindset. I focus on writing clean, reusable code that balances runtime execution speed with smart memory management, which is essential when designing cache invalidation behaviors.

Thank you, I will be happy if am given opportunity to work on this issue

ℹ️ Repo Maintainers: To accept this application, review their application or assign @centboy123 to this issue.

[drips-wave]

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

🧑‍💻 @benedictworks-home: 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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