chore: upgrade EqDemo.BlazorWasm.AdhocReporting to .NET 8.0

[devin-ai-integration]

Summary

Upgrades all three Blazor WASM AdHocReporting sub-projects (Server, Client, Shared) from .NET 6.0 to .NET 8.0.

Package updates:

• TargetFramework → net8.0 across all three projects
• Microsoft.AspNetCore.* / EntityFrameworkCore.* packages → 8.0.11
• Microsoft.Data.SqlClient 2.1.7 → 5.2.2, CodeGeneration.Design → 8.0.7, Extensions.Http → 8.0.1
• Bumped Microsoft.IdentityModel.JsonWebTokens and System.IdentityModel.Tokens.Jwt to 6.35.0 and NuGet.Common/NuGet.Protocol to 6.11.0 to resolve transitive dependency conflicts

IdentityServer removal (breaking change in .NET 8):

• Removed Microsoft.AspNetCore.ApiAuthorization.IdentityServer package reference
• Deleted OidcConfigurationController.cs
• Changed AppDbContext base class from ApiAuthorizationDbContext → IdentityDbContext (removed OperationalStoreOptions dependency)
• Replaced AddIdentityServer()/AddApiAuthorization()/AddIdentityServerJwt() in server Program.cs with standard Identity cookie authentication scheme defaults
• Removed app.UseIdentityServer() from the middleware pipeline

Client-side auth migration (OIDC → cookie auth):

• Removed AddApiAuthorization() and BaseAddressAuthorizationMessageHandler from Client Program.cs
• Replaced with a simple HttpClient + custom ServerAuthenticationStateProvider that checks auth state via a new GET /api/user endpoint
• Added UserController on the server to expose current user's authentication status and roles
• Updated LoginDisplay.razor: all navigation (Manage, Register, Login, Logout) uses NavigationManager.NavigateTo(..., forceLoad: true) via @onclick handlers to bypass the Blazor WASM router and correctly reach server-side Identity Razor Pages
• Removed obsolete SignOutSessionStateManager usage
• Updated Authentication.razor to redirect to Identity pages with forceLoad: true instead of using RemoteAuthenticatorView; uses relative returnUrl (/) to avoid LocalRedirect exceptions
• Updated RedirectToLogin.razor to redirect to Identity login with forceLoad: true; converts Navigation.Uri to a base-relative path for returnUrl
• Removed IAccessTokenProviderAccessor injection and OIDC token acquisition from Reports.razor; now passes null to startAdhocReporting JS call (the JS in eq.blazor.js already handles null tokens gracefully, and cookie auth is used automatically by the browser)
• Removed unused AuthenticationService.js script reference from index.html

Third-party packages (Korzh.EasyQuery, EasyData, Korzh.DbUtils) were left unchanged as they are netstandard2.0-compatible.

Review & Testing Checklist for Human

⚠️ The entire auth flow was rewritten. Only dotnet build was verified — no runtime testing was performed. The following items should be carefully validated:

• Cookie delivery to ServerAuthenticationStateProvider: The client uses new HttpClient { BaseAddress = ... } to call GET /api/user. In Blazor WASM, browser fetch() should include same-origin cookies by default, but verify that the auth cookie is actually sent on this request. If it isn't, the user will always appear unauthenticated on the client side despite being logged in on the server. This is the highest-risk item.
• Runtime auth flow end-to-end: Run the app and test: register → login → verify "Hello, {name}" appears → manage account → log out → verify redirect to login. Also test that unauthenticated users are redirected to the Identity login page.
• EasyQuery ad-hoc reporting with null token: Reports.razor now calls startAdhocReporting(null) instead of passing a JWT. The JS (eq.blazor.js) should skip the Bearer header when token is null and rely on cookie auth. Verify that the reports page loads and queries execute correctly for an authenticated user.
• Silent exception swallowing in ServerAuthenticationStateProvider: The catch (Exception) block silently treats all errors as "not authenticated." If the /api/user endpoint has a routing or serialization issue, users will silently appear unauthenticated with no diagnostic feedback.
• Database schema impact: The switch from ApiAuthorizationDbContext to IdentityDbContext drops IdentityServer-specific tables (DeviceCodes, PersistedGrants, Keys). If the app uses an existing database with prior migrations, verify that EF migrations still work or that the demo DB seeds correctly from scratch.
• Unused package reference: Microsoft.AspNetCore.Components.WebAssembly.Authentication is still referenced in the Client csproj but is no longer imported or used anywhere in code. Consider removing it.

Recommended test plan:

1. dotnet run from the Server directory
2. Navigate to the app in a browser
3. Click "Register" → verify full-page navigation to Identity register page, create a user, verify redirect back to app root (/)
4. Click "Log out" → verify navigation to Identity logout page
5. Click "Log in" → verify full-page navigation to Identity login page, log in, verify "Hello, {name}" appears
6. Click "Manage" → verify full-page navigation to Identity account management page
7. Navigate to /reports → verify the ad-hoc reporting page loads and queries work with authenticated user (no JS errors about missing token)
8. Verify that unauthenticated users are redirected to login (via RedirectToLogin.razor) and that returnUrl correctly sends them back to the original page after login

Notes

• The build compiles cleanly with 0 errors and 0 warnings.
• Snyk CI checks (security/license) show 3 failures — these are non-required dependency vulnerability scans unrelated to the code changes in this PR.

Link to Devin session: https://app.devin.ai/sessions/463b83d6b0de424783afbe2b57f8a318
Requested by: @tobydrinkall

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