Nexus.Reader/src/NexusReader.UI.Shared/Components/AuthenticationStatePersister.razor

@using Microsoft.AspNetCore.Components.Authorization
@inject PersistentComponentState ApplicationState
@inject AuthenticationStateProvider AuthenticationStateProvider
@implements IDisposable

@code {
    private PersistingComponentStateSubscription _subscription;

    protected override void OnInitialized()
    {
        _subscription = ApplicationState.RegisterOnPersisting(PersistAuthenticationStateAsync);
    }

    private async Task PersistAuthenticationStateAsync()
    {
        var authenticationState = await AuthenticationStateProvider.GetAuthenticationStateAsync();
        var principal = authenticationState.User;

        if (principal.Identity?.IsAuthenticated == true)
        {
            var email = principal.FindFirst(System.Security.Claims.ClaimTypes.Email)?.Value ?? principal.Identity.Name;
            var tenantId = principal.FindFirst("TenantId")?.Value ?? "global";
            var roles = string.Join(",", principal.FindAll(System.Security.Claims.ClaimTypes.Role).Select(c => c.Value));

            if (email != null)
            {
                ApplicationState.PersistAsJson("UserInfo", new UserInfo
                {
                    Email = email,
                    TenantId = tenantId,
                    Roles = roles
                });
            }
        }
    }

    public void Dispose()
    {
        _subscription.Dispose();
    }
}