.NET MAUI MSAL (Microsoft Entra ID) Sign-In + Microsoft Graph

I have a .NET MAUI app (tabs, pages done) with MSAL already integrated.
Interactive sign-in works (AAD prompt appears, I can authenticate), but when it returns to the app it lands back on the Login page and spins instead of navigating into the app. I need a MAUI/MSAL expert to finish the handoff and prove the session by calling Microsoft Graph /me.

What’s already done

MAUI app (.NET 8/9) with Shell & pages (Home, Timetable, etc.)

MSAL wired (PublicClientApplication, redirects, Android manifest)

Sign-in launches and completes; tokens appear to be acquired

What I need

Diagnose & fix the post-login flow so, after successful auth, the app:

navigates to AppShell/Home, and

displays basic Graph /me info (DisplayName/UPN) as proof.

Add a clean silent sign-in on app start.

Keep Android stable (embedded webview preferred) and ensure WithParentActivityOrWindow is correct.

Minimal notes for iOS/Windows redirects (no deep work required there).

Deliverables

Working handoff (Login → Shell) with a small “Signed in as …” label populated from /me.

IAuthService methods: silent, interactive, token retrieval, sign-out.

Short README: redirects used, where to change ClientId, how to test.

Acceptance

Tap Sign in → authenticate → app shows “Signed in as …” then lands on Home.

Relaunch app → silent sign-in succeeds (no prompt).

GetAccessTokenAsync("User.Read") returns a valid token.

Works on Android emulator/device. (iOS/Windows basic check is a bonus.)

Tech

.NET MAUI (.NET 8/9), Microsoft.Identity.Client v5, Graph SDK v5.

Azure App Registration & permissions (User.Read) already set up.

What I’ll provide

Repo access, ClientId/TenantId, and current auth code.

Please include:

Briefly how you’ll fix the handoff (embedded vs system browser, parent activity).

A link or snippet showing prior MSAL on MAUI/Xamarin work.

Your fixed price & earliest start.