Compose-Auth: Sign in with Google on iOS

    val googleAuthState = supabaseClient.composeAuth.rememberSignInWithGoogle(
        onResult = { result ->
            when (result) {
                is NativeSignInResult.Success -> {
                    onOnboardingComplete()
                    // Navigation is handled by App.kt observer
                }
                is NativeSignInResult.Error -> {
                    scope.launch {
snackbarHostState.showSnackbar(result.message)
                    }
                }
                is NativeSignInResult.ClosedByUser -> {} // User aborted
                is NativeSignInResult.NetworkError -> {
                    scope.launch {
snackbarHostState.showSnackbar("Network error. Please check your connection.")
                    }
                }
            }
        },
        fallback = { isGoogleSignInAvailable = false } // this fallback is triggered when I attempt to sign in on iOS
    )