Fix logout, the client log store and empty name attributes

Logout:
- It navigated to "authenticatio/logout", a misspelled route.
- The correct template route, authentication/logout, would throw anyway. Its
  RemoteAuthenticatorView casts the AuthenticationStateProvider to the OIDC
  template's service, and the app registers TokenAuthStateProvider instead.
- It now signs out through TokenAuthStateProvider.LogoutAsync, as the code
  commented out in the page intended, and returns home. LoginDisplay's sign-out
  goes through it as well.
- This also drops the obsolete SignOutSessionStateManager, the build's last
  warning.

The IndexedDB schema never declared the ClientLogs store that IStorage.AddLog
writes to, so every client log write failed inside its try/catch. Version 2 adds
the store, keyed by the Id AddLog assigns.

DInputBase.NameAttribute renders no name instead of name="" when the form maps
no field names.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

Extensions/GenericExtensions.cs

@@ -31,7 +31,7 @@ public static class GenericExtensions
 		{
 			var model = new IndexedDbDatabaseModel()
 				.WithName("data")
-				.WithVersion(1)
+				.WithVersion(2)
 				.WithModelId(1);
 
 			model.AddStore(nameof(Message))
@@ -45,6 +45,13 @@ public static class GenericExtensions
 				.AddIndex(nameof(Message.CreatedAt))
 				.AddIndex(nameof(Message.Medias));
 
+			// IStorage.AddLog numbers entries itself (max key + 1), so the key is Id rather than generated. Version 2
+			// added this store; before it, every log write failed inside AddLog's try/catch.
+			model.AddStore(nameof(ClientLogs))
+				.WithKey(nameof(ClientLogs.Id))
+				.AddUniqueIndex(nameof(ClientLogs.Id))
+				.AddIndex(nameof(ClientLogs.TimeStamp));
+
 			options.UseDatabase(model);
 		});
 	}