Two intertwined jobs here:
1. Diagnostic test for the production 401 we see when PostIt
talks to Yavsc.Blogs. The hypothesis this test isolates:
the access token sent on the wire is missing the 'blogs'
scope that Yavsc.Blogs' BlogScope policy requires (see
Yavsc.Blogs/Program.cs: RequireClaim(JwtClaimTypes.Scope,
"blogs")). The test fakes a single HttpMessageHandler,
captures the outbound bearer, decodes the JWT, and asserts
the 'scope' claim contains 'blogs'. It does not stand up a
server, an OIDC stub, or any network listener. Result: the
scope is present in the access_token we construct, so the
401 is not on the client side — most likely the IdP at
Yavsc.Org is not issuing 'blogs' as a recognised scope.
2. Mechanical fix of the three test files that broke during
the Settings model refactor (PostIt.Settings ->
PostIt.ViewModels.Settings; ApiUrl -> BusinessApiUrl;
Scopes/RedirectUri moved under Authentication;
DefaultDesktopRedirectUri is on AuthenticationSettings in
the global namespace). Also restored the BaseAddress
setup that BlogApiClient does in production in
LoginAndPersistAsync / the reloaded-client path of
YavscApiClientTests, so the two integration tests that
call CallAsync("posts") directly don't trip on
'request URI must be absolute or BaseAddress must be set'.
Test status: 45 / 45 passing in PostIt.Tests.
