[Frontend] Document frontend architecture and folder conventions

[floxxih]

Write frontend architecture guide covering routes, components, hooks, services, and utilities.

Acceptance Criteria:

• Folder conventions are explicit
• Data-flow patterns are documented
• New contributors can onboard quickly

[zhero-o]

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

Hi, I would like to take this issue. Can I get assigned?

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[Georgechisom]

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

Hi, This is my field, let me resolve this issue

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[drips-wave]

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

🧑‍💻 @Georgechisom: 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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🌊 Happy Wave 🌊

[drips-wave]

This issue has been completed by @Georgechisom as part of the Stellar Wave Program's 5th Wave 🥳

😎 @Georgechisom: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

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