feat: add seating plans for learning groups

LehrerApp.Desktop.Tests/PersonalDataExportServiceTests.cs

@@ -24,13 +24,23 @@ public sealed class PersonalDataExportServiceTests
         var documentation = new FakeDocumentation();
         documentation.Add(new Documentation { StudentId = studentId, Title = "Elterngespräch" });
 
-        var service = new PersonalDataExportService(students, groups, memberships, grades, results, entries, documentation);
+        var seatingPlans = new FakeSeatingPlans([
+            new SeatingPlan
+            {
+                GroupId = groupId, Name = "Standard", Room = "B204",
+                Assignments = [new SeatAssignment { Row = 1, Column = 2, StudentId = studentId }],
+            },
+        ]);
+        var service = new PersonalDataExportService(students, groups, memberships, grades, results, entries,
+            documentation, seatingPlans);
 
         var json = service.ExportAsJson(studentId);
 
         Assert.Contains("Anna", json);
         Assert.Contains("Elterngespräch", json);
         Assert.Contains("\"Value\": \"2\"", json);
+        Assert.Contains("\"Sitzplan\": \"Standard\"", json);
+        Assert.Contains("\"Reihe\": 2", json);
     }
 
     [Fact]
@@ -38,7 +48,8 @@ public sealed class PersonalDataExportServiceTests
     {
         var service = new PersonalDataExportService(
             new FakeStudents([]), new FakeGroups([]), new FakeMemberships([]),
-            new FakeGrades(), new FakeResults(), new FakeEntries(), new FakeDocumentation());
+            new FakeGrades(), new FakeResults(), new FakeEntries(), new FakeDocumentation(),
+            new FakeSeatingPlans());
 
         Assert.Throws<InvalidOperationException>(() => service.ExportAsJson(Guid.NewGuid()));
     }