Passkey signing UI (paired with sdk PR #3)

[truthixify]

Extra labels: feature, stellar, security
Tier: M (2-4 days) | Type: feature

Context. Once SDK ships the passkey signer, the demo needs a UI that lets a user opt in to passkey signing, register a passkey, and use it for all subsequent stealth ops without extension prompts.

Scope.

• Settings page: "Sign with Passkey" toggle.
• Passkey registration flow with a browser-supported authenticator.
• Fall back to Freighter if passkey fails or user unregistered.
• Doc'd in-app: what a passkey covers, what it doesn't.

Acceptance.

• Register + unlock happy path works on Chrome + Safari
• Fallback path exercised in test
• Copy explains trust boundary clearly

Files. src/pages/Settings.tsx, src/lib/stellar/passkey.ts (new).

[charlesejemai-cyber]

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

hi maintainer, i would like to work on this issue, thanks

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

[drips-wave]

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

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