Implement atomic swap proposal and acceptance UI for direct key exchanges

[Chucks1093]

Summary

Build the atomic swap interface allowing users to create a key exchange proposal, share it with a counterparty, and execute the swap when both parties agree.

Scope

• Create swap form: select offered key, amount, desired key, desired amount
• Shareable proposal link generated after creation
• Counterparty review page showing both sides with accept button
• Accept submits atomic swap transaction
• Swap history in portfolio showing completed exchanges

Acceptance Criteria

• Swap form validates offered and desired amounts against wallet holdings
• Shareable link loads correct counterparty review page
• Accept submits correct atomic swap transaction
• Swap history shows all completed exchanges with keys and amounts
• Expired or already-executed proposals show correct status

ETA

12 hours

[Mayor-Isaac]

@Mayor-Isaac has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

Hello Maintainer, I’ve reviewed the issue requirements carefully and can work on resolving the problem while making sure the final implementation meets the stated criteria.

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[zainabwahab-eth]

@zainabwahab-eth has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

Please assign this to me. Thank you

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[solaawojobi00-bit]

@solaawojobi00-bit has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

Kindly assign to me

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[Topmatrixmor2014]

@Topmatrixmor2014 has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

I would love to work on this issue

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[Sensei-Victor]

@Sensei-Victor has applied to work on this issue as part of the Stellar Wave Program's 9th wave.

Please assign
I've worked on something similar to this

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[drips-wave]

Congratulations, @zainabwahab-eth! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on September 30, 2026.

🧑‍💻 @zainabwahab-eth: 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.

Warning

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[grantfox-oss]

🎉 This issue has been marked as completed on GrantFox!

@zainabwahab-eth's PR #1005 was approved and merged by @Chucks1093.

🏆 @zainabwahab-eth: You earned 35 FoxPoints for this contribution! Your current tier: Builder (1,006 total points). Track your full progress on GrantFox.

👏 Great work, @zainabwahab-eth! Keep contributing to accesslayerorg.

[drips-wave]

This issue has been completed by @zainabwahab-eth as part of the Stellar Wave Program's 9th Wave 🥳

😎 @zainabwahab-eth: You earned 150 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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