aufräumen

LehrerApp.Api/LehrerApp.Api.csproj

@@ -9,6 +9,5 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" />
     <PackageReference Include="LiteDB" />
-    <PackageReference Include="System.Text.Json" />
   </ItemGroup>
 </Project>

LehrerApp.Api/ReadableSnapshot.cs

@@ -7,8 +7,9 @@ public class ReadableSnapshot
     public DateTime ExportedAt { get; set; }
     public ReadableSnapshotMeta Meta { get; set; } = new();
     public List<LearningGroup> Groups { get; set; } = [];
+    public List<Subject> Subjects { get; set; } = [];
     public List<Student> Students { get; set; } = [];
-    public List<Enrollment> Enrollments { get; set; } = [];
+    public List<GroupMembership> Memberships { get; set; } = [];
 }
 
 public class ReadableSnapshotMeta