Merge branch 'worktree-agent-ae59040b377a324cb'

# Conflicts:
#	GerbilManagerWebAPI/ApplicationContext.cs
#	GerbilManagerWebAPI/Program.cs
#	gerbil-manager-web/e2e/mock-data.ts
#	gerbil-manager-web/src/pages/GerbilDetailPage.tsx
#	gerbil-manager-web/src/strings/de.ts

GerbilManagerWebAPI/Dtos/ExhibitionResultDtos.cs

@@ -0,0 +1,34 @@
+namespace GerbilManagerWebAPI.Dtos
+{
+    /// <summary>EXHIBITION: payload for POST /exhibitions.</summary>
+    public record ExhibitionResultInput(
+        Guid? GerbilId,
+        string? EntityName,
+        string EventName,
+        DateTime? Date,
+        string? Placement,
+        string? Award,
+        string? Note);
+
+    /// <summary>EXHIBITION: payload for PUT /exhibitions/{id} (all fields optional/partial).</summary>
+    public record ExhibitionResultUpdate(
+        Guid? GerbilId,
+        string? EntityName,
+        string? EventName,
+        DateTime? Date,
+        string? Placement,
+        string? Award,
+        string? Note);
+
+    /// <summary>EXHIBITION: response DTO for a stored exhibition result.</summary>
+    public record ExhibitionResultDto(
+        Guid Id,
+        Guid? GerbilId,
+        string? EntityName,
+        string EventName,
+        DateTime? Date,
+        string? Placement,
+        string? Award,
+        string? Note,
+        DateTimeOffset CreatedAt);
+}