Merge main into phase/39-school-owners.

Keep school owners and phase 41 opinions/portraits together; ResetAsync wipes all saves so shared AppHost tests stay isolated.

tests/HSchool.AppHost.Tests/SchoolOwnerApiTests.cs

@@ -71,6 +71,9 @@ public class SchoolOwnerApiTests(AppHostFixture fixture)
             {
                 client.Dispose();
             }
+
+            using var cleanup = fixture.App.CreateHttpClient("server");
+            await SchoolApiTests.WipeAllSavesAsync(cleanup);
         }
     }