Kapitel 7 abgeschlossen.

LehrerApp.Core/Models/Student.cs

@@ -19,6 +19,8 @@ public class Contact
     public Guid Id { get; set; } = Guid.NewGuid();
     public string Name { get; set; } = "";
     public string Relation { get; set; } = "";
+    /// <summary>Vollständige Anrede für Briefe, z.B. „Sehr geehrte Frau Mustermann,“.</summary>
+    public string? LetterSalutation { get; set; }
     public string? Phone { get; set; }
     public string? Email { get; set; }
     public string? Street { get; set; }
@@ -40,3 +42,16 @@ public enum ContactInvalidReason
 }
 
 public enum Gender { M, W, D }
+
+public sealed record StudentReferenceSummary(
+    int Memberships,
+    int ExamResults,
+    int Grades,
+    int ReportGrades,
+    int ParticipationEntries,
+    int DocumentationEntries)
+{
+    public int Total => Memberships + ExamResults + Grades + ReportGrades
+                        + ParticipationEntries + DocumentationEntries;
+    public bool HasReferences => Total > 0;
+}