Smart Contract: Implement Platform FX Fee

[Tybravo]

🎯 Goal

Deduct a small cross-border conversion fee during the swap.

📋 Requirements

• Add fee deduction logic in execute_settlement_swap

📂 Target Directory

Contributors should work within this directory:
contracts/settlement_contract

🔗 Architecture & Dependencies

• Architecture Reference: Smart Contract Architecture Docs
• Dependencies: Implement execute_settlement_swap

🔧 Technical Scope

• Rust
• Soroban SDK

🌿 Fork & Branch

• Fork the repository
• Branch: git checkout -b feat-fx-fee

✅ Acceptance Criteria

• All tests must pass successfully
• Test cases pass on testnet

💬 Example Commit Message

feat: deduct a small cross-border conversion fee during the swap.

[Nonso-Eze]

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

I would love to work on this issue and contribute to the project.

I’ve reviewed the details and feel confident that I can investigate and implement a solid solution for this.

If this issue is currently unassigned and open for external contributors, could you please assign it to me? I will get started on a fix right away and submit a Pull Request as soon as it's ready.

Please let me know if there are any specific guidelines or approaches you'd like me to follow for this particular task.

Thanks,

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[Windowlight]

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

I’m interested in this issue and believe my experience with contracts, backend systems, and frontend implementation makes me a good fit. Happy to provide updates as I work through it.

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

[Banx17]

@Banx17 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Please kindly assign me this issue, Im trying to meet my wave monthly target.

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[promisszn]

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

Hi I’d like to work on this. I have some experience building smart contracts

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[drips-wave]

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

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[drips-wave]

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

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