feat(auth): SmartAuth SDK packages — OAuth, MFA, passkeys, devices, RS256, auth-ui
Phase 1C: @bytelyst/auth-client + @bytelyst/react-auth Google Sign-In
- loginWithGoogle/Microsoft/Apple(idToken) → POST /auth/oauth/:provider
- getProviders/linkProvider/unlinkProvider → provider management
- React context: loginWithGoogle, providers state, refreshProviders
Phase 2D: MFA + Social Login SDK + Auth UI
- verifyMfa/setupTotp/verifyTotpSetup/disableMfa/getMfaStatus
- regenerateRecoveryCodes → recovery code management
- React context: mfaRequired/mfaChallenge/mfaMethods state, verifyMfa action
- login() handles MfaLoginResult (returns false, sets MFA state)
- NEW @bytelyst/auth-ui: LoginForm, MfaChallenge, SocialButtons components
Phase 3: Passkeys + Device SDK
- getPasskeyRegisterOptions/verifyPasskeyRegistration
- getPasskeyAuthOptions/verifyPasskeyAuth/listPasskeys/deletePasskey
- listDevices/trustDevice/revokeDevice/revokeAllDevices
Phase 4C: @bytelyst/auth RS256 support
- createJwtUtils({ algorithm: 'RS256', rsaPrivateKey, rsaPublicKey })
- Dual verification: RS256 first, HS256 fallback (migration-safe)
- Remote JWKS support via jwksUrl option
- Backward-compatible: HS256 remains default
Phase 5B: Admin security endpoints
- getSecurityOverview/unlockUser/exportAuthData/cancelDeletion
Tests: 101 total (36 auth-client + 21 react-auth + 13 auth-ui + 31 auth)
Builds: all 4 packages pass tsc
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