Build a complete Blazor Server admin application with an in-process REST API: cookie auth for the UI, JWT for /api/v1/*, dynamic page and API permissions, user management with invite emails, file upload (App_Data storage), PDF and Excel reports with Excel user import, runtime settings, SMTP (MailKit), in-app notifications with SignalR, API rate limiting, and a polished MudBlazor UI. Blazor pages inject services directly; API clients use JWT. Configuration bootstraps from appsettings.json.