#79 Build a Stellar name service (SNS) integration

[Emmy123222]

Description
Integrate with a Stellar Name Service to allow users to register human-readable names (e.g. alice.xlm) that resolve to their Stellar address, and use these names in the payment form instead of raw G... addresses.
Files to Edit
frontend/lib/stellar.ts
frontend/components/SendPaymentForm.tsx
frontend/pages/settings.tsx
Tasks
• Research and select a Stellar name service (StellarID or similar)
• Add resolveStellarName(name) to lib/stellar.ts
• Update the destination field in SendPaymentForm to accept .xlm names
• Show a 'Resolving...' spinner while looking up the name
• Display the resolved address below the field for confirmation
• Add a 'Register your name' section to the settings page
• Cache resolved names for 10 minutes to reduce API calls
Acceptance Criteria
• alice.xlm resolves to a Stellar address in the send form
• Resolving spinner shown during lookup
• Resolved address displayed for confirmation
• Invalid names show a clear error
• Name registration link shown in settings

[udeachudivine-spec]

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

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[drips-wave]

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

🧑‍💻 @udeachudivine-spec: 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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