[dashboard] UI: Build APY configurations page for admin adjustment of yield vault parameters

[ONEONUORA]

Description\nCreate administrative page letting admins change interest rates and dynamic APY rules.\n\n## Files to Edit/Create\n- dashboard/app/dashboard/yield/page.tsx (new file)\n\n## Acceptance Criteria\n- Input forms with validation.

• Change yield index calculations on submit.\n\n## Guidance / Hints\nCall on-chain change routes via Freighter client wrappers.

[Hikmaholadele]

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

Hi maintainer, I'd like to work on this issue.

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[abdullahilateefat03-boop]

@abdullahilateefat03-boop has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello,

I'd love the opportunity to work on this issue. I have experience building software across different parts of the stack and always aim to write clean, maintainable, and well-tested code. If assigned, I'll communicate my progress regularly, ask questions when clarification is needed, and ensure the implementation is thoroughly tested before submitting a PR.

Thank you for your consideration.

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[anonfedora]

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

I'm Anonfedora, I have vast experience in contributing and building on the Stellar ecosystem with the Rust using soroban's SDK.
I'm also good at comprehensively testing features.
ETA: < 12 hours

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

[obacollins-lab]

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

Hi team, please I'd like to take up this issue.

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

[drips-wave]

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

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[drips-wave]

This issue has been completed by @anonfedora as part of the Stellar Wave Program's 7th Wave 🥳

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