Added `EnvelopeSenderPage.razor` as a placeholder for the sender's dashboard.
Updated `Index.razor` to include a homepage with a hero header, feature badges,
and dynamic description rendering using JavaScript interop.
Implemented `LoginReceiverPage.razor` for secure document access via access code,
with error handling and user feedback for various login states.
Implemented `LoginSenderPage.razor` for sender authentication, including error
handling, password visibility toggle, and redirection to the sender dashboard.
Added YARP reverse proxy for API routing and DevExpress Blazor components for advanced UI features, including PDF Viewer. Updated `EnvelopeGenerator.WebUI.csproj` to include necessary packages and ensure `yarp.json` is copied to the output directory. Modified `Program.cs` to configure YARP and DevExpress services, and adjusted the HTTP pipeline for proper routing. Updated `appsettings.json` with `ApiOptions` and `PdfViewerOptions`. Added `yarp.json` to define reverse proxy routes and clusters.
Introduced a new Blazor WebAssembly project (`EnvelopeGenerator.WebUI.Client`) targeting .NET 8.0 for client-side functionality.
Added a Blazor Server project (`EnvelopeGenerator.WebUI`) to host the application and enable server-side rendering.
Created essential Razor components (`MainLayout.razor`, `Home.razor`, `Routes.razor`, `Error.razor`, etc.) for layouts, routing, and error handling.
Configured project files, solution structure, and build settings. Added necessary styles, app settings, and launch profiles for development.
