💱 Add multi-currency support

[Smartdevs17]

Problem

Only USD supported in UI, limiting international use.

Context

Users in other countries cannot see prices in their local currency.

Proposed Solution

Implement currency selection:

1. Add currency picker to settings
2. Fetch exchange rates
3. Convert display prices
4. Store preference

Acceptance Criteria

• Multiple currencies available
• Prices converted correctly
• Preference persisted
• Exchange rates updated

Technical Notes

APIs: Free currency conversion API
Files:

• src/utils/formatting.ts
• src/store/settingsStore.ts

Constraints

• API rate limits
• Offline handling
• Rate caching

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[akordavid373]

@akordavid373 has applied to work on this issue as part of the Stellar Wave Program's 3rd wave.

i will love to work on this

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[Cyberking99]

@Cyberking99 has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

Hello,

I am a smart contract and full-stack developer interested in contributing to this issue. I am experienced with hands-on experience in Rust, Soroban, Go, Cairo, Solidity, and TypeScript.

I am passionate about building secure and scalable blockchain solutions, with a strong focus on writing clean, maintainable code. Based on the scope of this issue, I am confident I can deliver a complete solution within 24 hours of assignment.

I would appreciate the opportunity to contribute and help move this forward.

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Congratulations, @Cyberking99! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on April 29, 2026.

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This issue has been completed by @Cyberking99 as part of the Stellar Wave Program's 4th Wave 🥳

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