- Switch FruitBankConstClient.BaseUrl to HTTPS for localhost.
- Pin DevExpress.Blazor to 25.1.3 in client project.
- Add Microsoft.Extensions.ObjectPool v9 to test project for SignalR.
- Reformat App.razor markup; comment out ResourcePreloader.
- Render @Body only if logged in or on login page in MainLayout.
- Redirect to /Login if not authenticated after auto-login.
- Add SandboxEndpointSimpleTests.cs for HTTP/SignalR endpoint tests against local sandbox.
Introduces ISecureCredentialService abstraction and platform-specific implementations for secure credential storage (WebAssembly, MAUI, server). Refactors LoggedInModel to support async auto-login, login, and logout using stored credentials. Updates DI and UI logic to enable seamless auto-login and logout across all platforms. Cleans up redundant navigation checks and improves maintainability.