Remove Redundant Biometric Prompt Immediately After Registration

[maugauwi-hash]

Labels: bug, ios, passkey, usability
Priority: Medium
Estimated Time: 1 hour

Description:
AuthStore.register(username:) (Stores.swift:26-36) calls PasskeyService.shared.register()
(one Face ID/Touch ID prompt) and then, on success, calls await signIn(), which calls
PasskeyService.shared.authenticate() — a second, independent passkey ceremony and a second
biometric prompt, seconds after the first, for no functional reason beyond obtaining a token.

Tasks:

• Have the backend's /auth/register response return a session token directly, or
• Reuse the registration's own attestation to mint the session without a second ASAuthorizationController round trip
• Add a UI test asserting only one biometric prompt fires during the registration flow

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[kenedybokephraim-boop]

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

Hi i am a seasoned software developer, and i will love to work on this please

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[maztah1]

@maztah1 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Can i solve this issue please

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This issue has been completed by @maztah1 as part of the Stellar Wave Program's 7th Wave 🥳

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